In the spring and fall seasons, nutrients in lakes typically cycle again.
How does an ecosystem recycle nutrients?The movement of substance and energy between living things and the environment's non-living components happens through a system called the nutrient cycle. This happens because once plants and animals ingest nutrients from the soil, they die and decompose, releasing those nutrients back into the ecosystem. The movement of substance and energy between living things and the environment's non-living components happens through a system called the nutrient cycle. This happens because once plants and animals ingest nutrients from the soil, they die and decompose, releasing those nutrients back into the ecosystem.
How are nitrogen levels in lakes reduced?Nutrient removal through dredging may be quick and efficient. The organic "muck" on the pond bottom will be greatly removed. You will also end up with a deeper pond that has less overall nutrients.
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seismologists studying the earthquake that struck northern california in october 1989 are still investigating some of its mysteries: the unexpected power of the seismic
Seismologists studying the earthquake that struck northern California in October 1989 are still investigating some of its mysteries: the unexpected power of the seismic waves, the upward thrust that threw one man straight into the air, and the strange electromagnetic signals detected hours before the temblor.
A seismologist is an expert in seismology, or the study of earthquakes. Both words are rooted in the Greek seismos, or "a shaking," and seismologists study the factors that lead to the extreme shaking caused by quakes. These scientists also investigate related events, like volcanic eruptions, connected with movements of the earth's crust and shifting tectonic plates, and predict when and where future earthquakes will occur.
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I need the answers to this sheet
1. In socialism, the government controls production in basic industries and determines the use of resources.
Define socialism?In a socialist economy and administration, the people who produce commodities and services, such as farmers and factories, own the structures and equipment that they use. Either centralized governmental control of the means of production or decentralized, direct worker ownership can accomplish this. A variety of economic systems are characterized by communal ownership of the means of production predominating over private ownership, which is the hallmark of socialism, a left-wing economic ideology, and movement.
a. This system provides significant welfare for the people and the basic goal to share wealth more equally.
2. Policies are directed at making essential goods and services available more or less equally to all and major industries are generally publicly owned.
a. This typically includes energy, transportation and natural resources extraction industries.
b. Some industries can be privately owned such as the food and clothing industries.
3. In Venezuela, the government dominates its economy and controls several industries.
a. The government uses revenue to food, housing, health care and education, but the residents remain poor.
b. Government mismanagement led to food and energy shortages.
c. The country's leaders have undertaken campaign of nationalization and taken control of privately owned industries.
d. Sometimes the government provides little or no compensation to private owners of business.
e. Foreign companies and investors are cautious about doing business in Venezuela.
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Subsidence from the semipermanent Souther california high-pressure system
A. contributes to the poor air quality of Los Angeles.
B. improves the poor air quality of Los Angeles.
C. causes adiabatic cooling of pollution.
D. is irrelevant to the poor air quality of Los Angeles.
contributes to the poor air quality in Los Angeles
Over 50% of all emissions nationwide are produced by cars and trucks; in cities with heavy traffic, like Los Angel their impact is significantly greater.
What contributes to California's poor air quality?There are various causes of pollution that contribute to the poor air quality in California, from vehicle emissions and the production of fossil fuels to the lengthened wildfire seasons brought on by climate change.
Does Los Angeles's air quality seem to be declining?The Clean Air Act has allowed the United States to advance in various ways. Despite the city's 6% pollution decrease in 2021 compared to the year before, Los Angeles has the most filthy air out of more than 2,400 U.S. cities studied in a report released today by an air-quality monitoring company.
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Consider chromium contamination in a groundwater sample. At first, nothing is known of the chromium surface, the groundwater characteristics, or the extent of the plume. Rank in order the process for tracking the contamination and its rendition, with the first step on top.
1. Determine the geology of the site and the water table
2. Determine the direction of the flow of groundwater
3. Determine possible sources of the chromium behind the plume
4. Drill wells in front of the plume of contamination and extract contaminated groundwater
Determine site geology and water table. Determine the direction of groundwater flow. And Identify Possible Sources of Chromium Behind Clouds. And dig a well in front of the pollution plume and collect the contaminated groundwater.
What is chromium contamination?
Chromium pollution is a major environmental threat that seriously affects the environment and natural resources, especially water and soil. Excessive exposure can lead to increased accumulation in human and animal tissues, resulting in toxicity and adverse effects.
Where is chromium maximum generally found?
Chromium mainly found in chromite. This ore is found in many places such as South Africa, India, Kazakhstan and Turkey. Chromium metal is typically produced in an electric arc furnace by reducing chromite with carbon or chromium(III) oxide with aluminum or silicon.
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as the african tropical changed to savanna, hominins moved onto the savanna while other apes remained in the forest. a major adaptation to the savanna was the evolution of bipedal locomotion
Shorter femur angled outward to accommodate pelvic changes. Regardless of whether an animal is bipedal by nature, bipedal locomotion is the movement of an upright animal on two legs. Bipedal movement includes walking, running, and hopping.
What modifications have been made for bipedalism?
A larger, more robust hallux is one trend, along with a compact, arched foot, a strong, long, and angled femur, a robust tibia, a bowl-shaped pelvis, and a more anterior foramen magnum.
How did hominid evolution depend on bipedal locomotion?Bipedalism was a characteristic that almost all later hominid species will possess due to the numerous benefits it gave. Hominids were able to produce and utilise tools more effectively, reach for fruit in trees, and use their arms for social interaction and display when they became bipedal.
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a researcher claims that a tornado of a given size and strength is likely to cause more deaths, both proportionately and in absolute numbers, in the southeastern region of the
According to a study, a tornado of a certain size and intensity is more likely to kill people in the Southeast of the United States than it is in the Northeast, both proportionately and numerically. TRUE,
Changes the frequency of fatalities and tornado of a certain size and intensity both proportionately and in absolute terms.
Dry, chilly surface air temperatures are typical of this area of the United States. Supercell thunderstorms, which give rise to tornadoes, thrive across the Great Plains. This area is where the atmosphere's higher levels of chilly, dry air cap warm, humid surface air.
Since it is April and spring, the soil is recovering from the winter. Because of the strong and quick air movement, tornadoes are frequent.
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FILL IN THE BLANK. complete the statement:___causes sea surface salinity to decrease, whereas___causes sea surface salinity to increase.
Melting of ice causes sea surface salinity to decrease, whereas evaporation causes sea surface salinity to increase.
The salinity of the sea surface increases when excess evaporation occurs and the water from the sea is evaporated into the air. In this circumstance, the concentration of the solvent i.e water is decreased and the concentration of the solute i.e salt increases. Hence, evaporation increases sea surface salinity.
On the other, the melting of ice increases the concentration of solvent i.e water in the sea. This increase in the concentration of the solvent causes the sea surface salinity to decrease.
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an excellent method of defining social regions is to isolate one social trait and plot its distribution within a city by using
Isolating one social characteristic and mapping its distribution within a city using census tracts is a great technique to establish social regions.
A defined geographic area used for the census may be referred to as a census tract, census area, census district, or meshblock. Within a county, there are frequently multiple tracts, and sometimes they overlap with the boundaries of cities, towns, or other administrative divisions. These are frequently arbitrary in unincorporated areas of the United States, with the exception of where they coincide with governmental boundaries.
The smallest territorial unit for which population data is available in many nations is a census tract. Census tracts in the US are divided into census blocks and block groups.
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elementary surveyiong two ridges b and c forms a valley having a at the bottom part in between the ridges
The practice of elementary surveyiong involves taking measurements in elevation the horizontal plane to ascertain the relative location of both natural and man-made things on the earth's surface.
the elevational difference between a and b. If AB = x, then x = 111.356, tan 36 = 64.39 m, and the difference in height is 64.39 m.
We are told that two ridges B and C form a valley with a point A at its bottom. There is a difference in elevation between the ridges of 111.356 meters, and point A is elevated at a 36-degree angle. Using the tangent formula, tan = opposite/adjacent, we may determine the elevational difference between A and B. We change the variables, then solve for x, the difference in elevation between A and B. Therefore, there is a 64.39 m difference in height between A and B.
elementary surveyiong two ridges b and c forms a valley having a at the bottom part in between the ridges. elevation difference between b nad c is 111..356 m. observing at point a, the angle of elevation
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The spatial distributions, patterns, and relations of interests to geographers are best exposed through the use of _____ a geographers primary tool
The spatial distributions, patterns, and relations of interests to geographers are best exposed through the use of maps a geographers primary tool.
In order to communicate the concepts of geography such as the spatial relationships, movements of plate tectonic, magnitudes of earthquakes and other natural disasters, thematic maps are used. These maps are the primary tools used by the geographers.
On map we see climate of different region of the world, types of soils and weather patterns are examples of thematic maps. Geographic data can be represented in five different ways on the thematic maps.
simply put, thematic maps are primary tool used by the geographers to study and understand the spatial distributions, movements and magnitudes of geography.
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louis lived in a community close to love canal, near niagara falls. which of the following did he most likely experience?
Nearly 22,000 tonnes of chemical waste, including polychlorinated biphenyls, dioxin, and pesticides, manufactured by the Chemicals and Plastics Corporation in the 1940s and 1950s, were dumped there after an abandoned canal that was once there was used as a dumping ground.
Benzene, a known human carcinogen that has been found in significant proportions, is one of the chemicals that make up the mixture seeping through the ground and into residences at Love Canal.
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For each of the following departments in the cabinet of a U.S. president, give a brief description of its role.
Department of State
Department of the Treasury
Department of Defense (formerly the War Department)
Department of Justice
Department of the Interior
Department of Agriculture
Department of Transportation
Department of Energy
Department of Education
Department of Homeland Security
help me asap pls!
Department of State: The Department of State is responsible for representing the United States in foreign affairs and international negotiations. It is also responsible for maintaining diplomatic relations with other countries.
Department of the Treasury: The Department of the Treasury is responsible for managing the nation's fiscal policy, developing regulations and procedures to manage the federal government's finances, minting coins and currency, and collecting taxes.
Department of Defense (formerly the War Department): The Department of Defense is responsible for organizing, training, and equipping the United States military forces for the defense of the nation.
Department of Justice: The Department of Justice is responsible for enforcing federal law and protecting the rights of citizens.
Department of the Interior: The Department of the Interior is responsible for managing and conserving public lands and natural resources. It is also responsible for supporting tribal governments and promoting economic development in rural and Native American communities.
Department of Agriculture: The Department of Agriculture is responsible for promoting and protecting the agricultural industry in the United States. This includes developing policies, researching new technologies, and supporting sustainable food production.
Department of Transportation: The Department of Transportation is responsible for overseeing the development of the nation's transportation systems and infrastructure. It is also responsible for ensuring the safety of the public by enforcing motor vehicle safety regulations.
Department of Energy: The Department of Energy is responsible for developing policies, researching technologies, and promoting energy efficiency. It is also responsible for managing the nation's nuclear weapons and energy resources.
Department of Education: The Department of Education is responsible for developing educational policies and providing resources to improve the quality of education in the United States.
Department of Homeland Security: The Department of Homeland Security is responsible for protecting the United States from threats posed by terrorism, cyber-attacks, natural disasters, and other emergencies.
magmatic segregation tends to produce deposits of ____ near the base of intrusions. group of answer choices copper gold chromite silver
Chromite deposits frequently form close to the base of intrusions as a result of magmatic segregation.
What is Magmatic segregation ?Any process by which one or more minerals become regionally concentrated (segregated) when a magma is cooling and crystallizing is referred to as magmatic segregation. Magmatic cumulates are rocks that resulted from magmatic segregation. Iron, granite, aluminium, diamond, chromite, and platinum are a few of the often occurring mineral deposits created by magmatic segregation. The concentration of the ore leads to the segregation of different minerals due to the varied temperatures and basicity zones that exist in magma.
What are the three magmatic processes?Molten magma is produced by three main rock behavior crossings to the right of the green solidus line: 1) Decompression melting brought on by reducing pressure, 2) Flux melting brought on by introducing volatiles (more on this below), and 3) Heat-induced melting brought on by raising temperature. Mantle rock melting causes magma to develop. As they ascend, a little amount of the rocks start to melt (or as water is added to them). These little melt blobs travel upward and combine to form larger volumes that also move higher.
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which of the following are examples of how maps may be misused such that the information they convey is incorrect, incomplete, or distorted? (select all that apply.)
Answer:
Varying scale from one area to another
Selective omission of data
Use of an inappropriate projection
Explanation:
Following are examples of how maps may be misused such that the information they convey is incorrect, incomplete, or distorted
- varying scale from one area to another
- the selective omission of data
- use of an inappropriate projection
Varying scale from one area to another can be a form of misusing maps, as it distorts the relative size of features shown. This can lead to incorrect assumptions about the area’s size or its distance from other features.
Selective omission of data can also be a form of misusing maps. This may involve leaving out certain data that would otherwise be necessary to accurately represent a feature, such as omitting roads or elevation changes. This can lead to an incomplete representation of a feature’s characteristics.
Finally, the use of an inappropriate projection can lead to misused maps. Different map projections can have different effects on the shape and size of features shown and can distort the information shown.
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The complete question:
Which of the following are examples of how maps may be misused such that the information they convey is incorrect, incomplete, or distorted?
a) varying scale from one area to another
b) the selective omission of data
c)use of an inappropriate projection
d) None of these
Which of the following gases was the least abundant in the earth's atmosphere 3.5 billion years ago? a) carbon dioxide b) nitrogen c) oxygen d) hydrogen e) water vapor
Answer:
oxygen
Explanation:
Oxygen was the least abundant in the earth's atmosphere 3.5 billion years ago
groundwater group of answer choices completely fills the zone of saturation above the water table. moves underground mainly in underground river channels. dissolves very porous rock like obsidian faster than it dissolves limestone. typically moves slowly within the ground through porous rock layers like sandstone.
Runoff streams are created when rain that cannot be absorbed by the soil builds up on the underground surface.
The groundwater is replenished or recharged when the soil is fully saturated because new water slowly travels from the unsaturated region of the soil through the saturated region. primarily flows through underground river systems. C. dissolves limestone more slowly than particularly porous rock, such as obsidian. The majority of groundwater comes from precipitation in the form of rain or snow, which is meteoric water. Water from the surface seeps into the ground as soon as the water touches the earth. Due to interconnected pore spaces, water can travel through rock and soil underground. Depending on the region, the depth at which soil or rock pores get saturated with water can be shallower or deeper. Like surface water, groundwater often moves downward as it descends a slope. However, the slope of the barrier below it, not the surface above it, determines whether groundwater is flowing "downhill."
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The pyramid of biomass in sea is also generally inverted because the biomass of fishes far exceeds that of phytoplankton. Isn’t that a paradox? How would you explain this?
Because fish biomass considerably outweighs that of phytoplankton, the marine biomass pyramid is also typically inverted. It is paradoxical.
What role does phytoplankton play?The foundation from several aquatic food chains is phytoplankton. They offer food for a variety of sea animals in a healthy ecology. Microalgae, sometimes referred to as phytoplankton, are similar to land plants in how they have chlorophyll and need sunlight to survive and develop.
Briefing:Part 1 : A graphical image of the quantity, biomass, and energy of the diverse scenarios levels of the food chain are ecological pyramids. These come in three varieties:
Number pyramid
Structure of biomass
energy pyramid
Part 2: The sea's biomass pyramid
The second trophic level in marine environments, which is made up of zooplanktons, has a higher biomass than the lower phytoplanktons. As a result, this represents an inverted biomass pyramid.
The phytoplanktons have a great capability for reproduction. This ecology can therefore always be supported because there are constantly enough producers.
Part 3: Diagram
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solar energy - energy from the sun
nucleus - central part of an atom
combustion - the process in the presence of oxygen
fission - a process that splits atoms
energy - capacity of doing work
photosynthesis - process that plants produce sugar
atom - a nucleus surrounded by electrons
...
(i) Solar energy is the energy generated by the sun. The radiations of the sun are capable of creating energy from the sun. It is created with the help of nuclear fusion. Nuclear Fusion takes place when protons of hydrogen atoms collide in the sun’s core and fuse to create a helium atom. This process is also known as the proton-proton chain reaction.
(ii) Nucleus has different meanings in different perspective. Nucleus is the positively central part of an atom. The atom is divided into three parts mainly electron, proton, and neutron.
electron + proton = neutron
(iii) Combustion is the exothermic reaction. The reactions that place in the presence of oxygen. For example - Burning of a candle.
(iv) Fission is the process of divison or splitting of atoms into two or more parts. In this process, the parent atom splits into two daughter nuclei. It is a type of nuclear reaction. For example - the splitting of Uranium - 235.
(v) Energy is the capacity of doing work. The formula of energy is Power*time. It is measured in joule.
(vi) Photosynthesis is the process by which plants make their own food using sunlight, carbon dioxide, and water to form oxygen and nutrients.
(vii) Atom is the smallest part of an element that is divided into three parts electron, proton, and neutron.
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groundwater contaminants group of answer choices like sulfur, iron, calcium carbonate, and methane may come from the rock the water flows through. are all eventually removed by rock and sediment acting as natural filters. move so slowly that they are usually detected and removed before they travel far. are always toxic materials like arsenic, mercury, and lead.
Groundwater contaminants, like sulfur, iron, calcium carbonate, and methane may come from the rock the water flows through.
Groundwater contamination is a serious environmental issue because it can pollute the water supply and make it unsafe for human consumption. There are a variety of ways that groundwater can become contaminated, including agricultural runoff, sewage leakage, and industrial waste disposal.
Once groundwater is contaminated, it is very difficult to clean up, and the contamination can spread quickly, making it a major environmental hazard. Sediment, chemicals, and fecal coliform are the three most prevalent groundwater contaminants.
Hence, the correct answer is option "A".
The question is incomplete, the complete question is:
Groundwater contaminants:
A. Like sulfur, iron, calcium carbonate, and methane may come from the rock the water flows through.
B. Are all eventually removed by rock and sediment acting as natural filters.
C. Move so slowly they are usually detected and removed before they travel far.
D. Are always toxic materials like arsenic, mercury, and lead.
E. All of the above are true statements.
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The hard and brittle outer layer of the Earth is known as the _______.
A.
atmosphere
B.
lithosphere
C.
mantle
D.
core
Answer: B. lithosphere
Explanation:
The hard and brittle outer layer of the Earth is known as the lithosphere. It's the part of the Earth that is above the asthenosphere.
How does Ecological Economics define the relationship between a human economy and natural
ecosystems? Please describe this relationship in three to five complete, grammatical, and concise
sentences.
Answer:
Ecological economics is a branch of economics that focuses on the relationship between human economic systems and natural ecosystems. In ecological economics, the economy is viewed as a subsystem of the broader biosphere, and the goal is to understand and manage the interactions between the two in a sustainable manner. This approach recognizes that natural ecosystems provide valuable resources and services that support human well-being, and that human economic activities can have impacts on the health and functioning of ecosystems. Ecological economics seeks to integrate economic and environmental considerations in decision making, and to develop policies and practices that support both human prosperity and the preservation of natural systems.
The diagrams below show the crystals of four different rocks viewed through the same hand lens. Which crystals most likely formed from molten material that cooled and solidified most rapidly?
The crystal most likely formed from molten material that cooled and solidified most rapidly is option 4.
Igneous rocks or crystals are formed when hot, molten material cools down crystallize and solidifies. The melted material originates deep within the Earth near active plate boundaries or hot spots, which rise toward the surface where they form igneous rocks. Igneous rocks are divided into two groups, intrusive igneous rocks, or extrusive igneous rocks, depending upon where the molten rock solidifies. Extrusive igneous rocks, also called volcanic igneous rocks, are created when magma exits and cools above or very near the Earth's surface. Intrusive igneous rocks are created when magma cools underneath the Earth’s surface. The texture of crystals can be crudely related to the rate of cooling. The higher the rate of cooling leads to smaller and finer texture of the crystals. The rate of cooling is proportional to the difference in temperature between the bodies in contact with heat flowing from the warmer body to the cooler body. Hence, option 4 is likely to form by the most rapid rate of cooling.
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common sources of beach sand include which of the following? multiple select question. rivers erosion of local cliffs offshore sandbars lake sediments deep-ocean currents
Sand is often produced by four processes: weathering of continental granitic rock, weathering of oceanic volcanic rock, precipitation from water, and skeletal remains of creatures.
Sand is typically obtained from rocks on land. Rock is cracked into smaller pieces over time by weather conditions such as rain, ice, wind, heat, cold, and even plants and animals. Large boulders that split into smaller rocks could be the starting point of this weathering. The granite is eroded by water that enters fissures.
Sand arises from volcanic rock in regions where there are volcanoes. This explains why the Hawaiian Islands' beaches are different colors.
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future temperature increase to the initial temperature provided. also, note that the number of decades between year 2000 and year 2100 is 10. finally, some locations may have the highest or lowest temperatures in 2000, but may not necessarily have the highest and lowest temperatures in 2100. the rate makes all the difference!
Future temperature increase to the initial temperature provided. also, note that the number of decades between year 2000 and year 2100 is 10. The rate makes all the difference from greatest to least Washington DC, Madrid, Melbourne, Montreal, Copenhagen.
Temperature is a bodily amount that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that traditionally have trusted numerous reference factors and thermometric materials for definition.
The average temperature on Mercury is a balmy 354 stages F. in addition, because Mercury has truely no surroundings to scatter mild, the sky could be black, despite the fact that the sun's disk itself would be over two times as huge as what we look at from the Earth.
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This symbol on a station model indicates light rain.
two black dots side by side
three asterisks at the vertices of an equilateral triangle
a triangle enclosing a black dot
an asterisk over a downward-pointing triangle
Light Rain is expressed by two dots side by side and Moderate Rain by three dots in the shape of a triangle or in a straight line up and down, Wind Speed 55-60 mph (50knots) is Triangle on the line
Weather symbols of dots are graphical depictions of a variety of atmospheric phenomena frequently used in meteorological predictions to show current weather conditions and forecast upcoming weather. It is frequently presented with a synoptic weather map, but it can also be seen on its own.
Starting with the components most frequently associated with weather forecasts—the weather symbols, of course—is only logical. Let's examine the definitions of the most popular ones.
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These were the seasonal winds that facilitated trade between the Swahili coast and southern Arabia, the Persian Gulf, and southeast Asia.
A) Bali winds
B) Monsoon winds
C) The Euros
D) The Taku Wind
The correct answer is option B. Trade between the Swahili coast and southern Arabia, the Persian Gulf, and Southeast Asia was made easier by monsoon winds, which are seasonal winds.
In addition to facilitating trade between the Swahili coast and southern Arabia, the Persian Gulf, and southeast Asia, the seasonal monsoon winds also promoted cultural contact. The monsoon winds, which blow towards the East African coast for three to four months of the year before turning around several months later, left traders stranded for months at a period, which promoted interfaith unions and cross-cultural interactions. Additionally, people from the Arab and Persian nations were drawn to the wealthy Swahili coast. Swahili culture was influenced by elements from Southeast Asia, Africa, and the Arabian Peninsula.
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Compare obsidian and granite. Explain why granite is more easily carved into statues and monuments?
Obsidian cools quickly because it extrudes. Granite, on the other hand, cools slowly and is invasive.
Obsidian and granite can be contrasted. Why is it easier to chisel monuments and statues out of granite?Since it cooled quickly, obsidian lacks crystals. The continual melting of granite results in bigger crystals. The larger crystals produce a stronger structure and won't shatter easily, unlike obsidian, which will break easily, which is why it can be made into a statue more readily.
Because it extrudes, obsidian cools quickly. On the other hand, granite cools slowly and is intrusive. This can be seen by the size of the crystallized particle. Because of how quickly it cooled, obsidian lacks crystals. Granite has larger crystals because it is constantly melting. Because of the larger crystals, it can be sculpted into a statue more easily than obsidian because the framework is stronger and less likely to break.
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Why might sighting a line of offshore breakers cause sailors to turn their boats around?
A delivery truck is transporting boxes of two sizes large and small the combined weight of a large box and a small box is 75 pounds the truck is transporting 65 large boxes and 70 small boxes if the truck is carrying a total of 5025 pounds in boxes how much does each type of box weigh 
Answer:
Small - 15 lbs, Large - 60lbs.
Explanation:
If the combined weight of a large box and a small box is 75 pounds, and the truck is carrying 5025 pounds in boxes, then the total number of large and small boxes on the truck is 5025/75 = 67 boxes.
Since the truck is carrying 65 large boxes and 70 small boxes, there are a total of 65 + 70 = 135 boxes on the truck.
Therefore, the weight of each small box is (5025 - 65*75)/70 = 15 pounds, and the weight of each large box is 75 - 15 = 60 pounds.
Syncline. **On a geologic map, if the contacts between sedimentary rock units forms a bull's eye pattern of concentric circles, with the YOUNGEST unit in the center, the underlying structure is
On a geologic map, if the contacts between sedimentary rock units forms a bull's eye pattern of concentric circles, with the YOUNGEST unit in the center, the underlying structure is Syncline.
A syncline is a fold in structural geology that has younger layers closer to the structure's center. A huge syncline with smaller folds superimposed is called a synclinorium .
When tectonic plates move in the same direction, the crust is compressed and forced upward, creating synclines. The massive land masses that make up the Earth's crust and upper mantle are known as tectonic plates. Many of the landforms on Earth were formed as a result of the movement and shifting of these plates over time.
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