the roots of the trees bind the topsoil altogether and it prevents the wind and water to carry away the soil. When there is deforestation the binding of the soil particles is greatly affected, and the most fertile part of the soil (the top layer) can be carried away by floods for example. This makes the soil infertile eventually leading to desertification.
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Why is diffusion considered a form of passive transport?
Responses
A It has no effect on the health of the cell.
B It's carried out while the cell does other things.
C It's a process that occurs automatically.
D It requires no energy from the cell.
Answer:
D It requires no energy from the cell.
Explanation:
The diffusion considered as a form of passive transport because it requires no energy from the cell. Thus, option D is correct.
What is diffusion?Diffusion has been known as the process in which molecules of the solvent pass via a semipermeable membrane from a lower concentrations to higher concentration or from less concentrated solution to high concentrated solution. In the process of diffusion movement of water takes place.
There are mainly three types of osmosis and these are hypertonic, hypotonic, and isotonic. The process of osmosis has been passive transport as water moves from low solute concentration to the high solute concentration.
Therefore, The diffusion considered as a form of passive transport because it requires no energy from the cell. Thus, option D is correct.
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Why does air have to be removed from the canister of an electron microscope?
a) to kill the specimen
b) to keep the specimen from moving around
c) an explosion would occur
d) to prevent the operator from becoming contaminated
e) the air would interfere with the electrons
Air has to be removed from the canister of the electron microscope because the air would interfere with the electrons (option E).
What is electron microscope?Electron microscope is any of the several forms of microscope that use a beam of electrons, rather than one of light, and thus has a much greater resolving power.
Electron microscopes are very powerful biological tools used to visualise variety of samples. They are used by scientists to view cells, tissues and small organisms in details. However, it should be noted that these living samples cannot be viewed on electron microscopes.
The vacuum inside the electron microscope is one reason why living samples cannot be viewed. The beam of electrons being aimed at the sample would be deflected when they hit air particles if the vacuum is not present.
Therefore, it can be said that the air is one component that must be eliminated to allow a direct passage of electrons.
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1. Which category of gymnosperms are thought to have given rise to modern-day flowering plants?A. gnetophytesB. ginkgoC. conifersD. Cycads
There are for modern groups of gymnosperms today (Coniferophyta, Cucadophyta, Gingkophyta, and Gnetpphyta), being the gymnosperm group that is proposed to be closer to the angiosperms the Gnetophyta (a), being considered that they evolved from Gnetophytes (a) about 150 million years ago.
Answer:
A. gnetophytes
Explanation:
1. Most life on Earth depends either directly or indirectly on photosynthesis. Which statement describes the basicfunction of photosynthesis?A. Energy is released for DNA to use during cellular respirationB. Sunlight energy is converted into chemical energy stored in glucoseC. Food energy is produced in the form of proteins for other organisms to consumeD. Energy from ATP is used to convert water and oxygen into carbohydrates and carbon dioxide
Photosynthesis is the process by which autotrophic organisms obtain energy, being the statement that describes the basic function of photosynthesis the: B. sunlight energy is converted into chemical energy stored in glucose.
Imagine someone asks you how much you spend per year on clothing. To give an answer, you figure you spend about $50 per month, and you calculate that to about $600 per year. What approach to problem solving did you use to provide an answer to the question?
Question 1 options:
Algorithm
Analogy
Prototype
Heuristics
The correct approach to problem solving in this question is option (1) i.e, Algorithm.
What is Algorithm?Algorithm is a common set of rules or step-wise instructions used in calculation or computation as an approach to problem solving.
Algorithm originally refers to a systematic procedure that produces—in a finite number of steps—the answer to a question or the solution of a problem.
The term is derived from the Latin translation, Algoritmi de numero Indorum, of the 9th-century Muslim mathematician al-Khwarizmi’s arithmetic treatise “Al-Khwarizmi Concerning the Hindu Art of Reckoning.
Whereas, Analogy refers to comparison between one thing and another, typically employed as an approach to explanation or clarification and Prototype is preliminary sample, device or model based upon which other (higher) forms or versions are developed.
Heuristics are the mental shortcut commonly used an approach to solve or simplify problems and avoid cognitive overload based upon the information from previous experiences with similar problems.
Here, the annual expenditure on clothing can be estimated based upon the monthly clothing expenditure. If $50 per month is spent on clothing, then $600 will be spent per year according to the simple rule of multiplication, i.e, 50*12+600. Thus, an algorithm is best approach to problem solving or decision-making.
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Which of the following processes is used to amplify a small DNA sample and produce many identical copies?ооооrestriction digestgel electrophoresistransformationpolymerase chain reaction
The answer would be polymerase chain reaction (PCR).
This is a technique used to amplify pieces of DNA. It allows a single or a few copies of DNA to be replicated into many copies.
The correct answer is polymerase chain reaction (PCR).
PCR is a technique that uses a special enzyme called DNA polymerase to copy a specific segment of DNA repeatedly. PCR can produce millions of copies of a DNA fragment from a very small amount of starting material. PCR is useful for many applications, such as DNA fingerprinting, gene cloning, genetic testing, and forensic analysis.Some of the other processes mentioned in the question are:Restriction digest: a process that uses enzymes called restriction endonucleases to cut DNA molecules at specific sequences.Gel electrophoresis: a process that separates DNA fragments based on their size and charge by applying an electric current to a gel matrix.Transformation: a process that introduces foreign DNA into a cell, usually a bacterium, by using a vector such as a plasmid.
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Due to the fact that lipids may be broken down to produce significant amounts of energy, one of the lipids' primary biological purposes is to store energy.
What is the function of lipids?Since lipids may be broken down to provide significant amounts of energy, storing energy is one of their primary biological purposes. Additionally, lipids create many signaling and messenger molecules in the body, as well as the structural elements of cell membranes.Triacylglycerols, phospholipids, and sterols are the three primary categories of lipids.Lipid accumulation in microorganisms is a biological process that serves a variety of purposes.Lipid storage aids in cell growth, cell division, the reaction to stress, and the storage of energy for survival. Lipid buildup contributes to pathogenicity in some situations.To learn more about lipids, refer
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Where are headwaters of San Antonio River, and what are they called
here are four steps in solving one’s personal financial challenges: 1. considering opportunity costs 2. assessing risks and returns 3. setting short- and long-term goals 4. assessing needs and wants Which of these is the correct order of these steps? 2, 1, 3, 4 1, 2, 3, 4 4, 1, 2, 3 4, 2, 3, 1
The correct four steps in solving one’s personal financial challenges is option 4,1,2,3.
4. assessing needs and wants.
1. considering opportunity costs.
2. assessing risks and returns.
3. setting short- and long-term goals.
Some situations that might reason financial stress consist of dropping your job or being retrenched, long time unemployment, being unable to get complete time work, incapacity to pay your bills or now not being able to deal with the growing fees of residing.
Feeling beaten down by money issues can adversely impact your sleep, and strength degrees. It may go away you feeling indignant, ashamed, or apprehensive, gas anxiety and arguments with those closest to you, exacerbate pain and mood swings, or even growth your danger of despair and tension.
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2. I have
involvement in the
immune system
(ex: antibodies).
Proteins have an involvement in the immune system. They work as anti bodies. Antibodies are itself predominantly made of proteins.
Proteins called antibodies defend you when your body comes into contact with an unwelcome chemical. Antibodies, which are made by your immune system, bind to these foreign chemicals and drive them out of your body.
Immune system proteins are primarily composed of antibodies (immunoglobulins), complement proteins, and cytokines, a class of hormones that facilitate communication between immune system cells.
How do antibodies work?
Antibodies support immunity in three ways:
by attaching to infections and neutralizing them (neutralization); by encouraging macrophages and other cells to remove pathogens by coating them (opsonization); and by inducing other immune responses including the complement system to cause pathogen death.The complement system initiates a protracted chain of protein synthesises that either opsonize a pathogen for phagocytosis or directly lyse it by producing a membrane assault complex. A macrophage, neutrophil, or natural killer cell expresses the Fc receptor tail during opsonization. The immune cell will then attach to the Fc tail of the antibody rather than the pathogen itself, hastening the process of locating pathogens for phagocytization.
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You're working in the rainforest and discover a new species. You get to name the species. What must be included in this name, and how is it written?The name must include the genus and species of the new organism. It must be written in bold with the species name lowercase.The name must include the genus and species of the new organism. It must be written in italics with the species name lowercase.The name must include the domain and the species of the new organism. It must be written in italics with the species name lowercase.The name must include the genus and species of the new organism. It must be written in bold with the species and genus name in lowercase.
The correct option is: The name must include the genus and species of the new organism. It must be written in italics with the species name lowercase.
Species names have two parts, the genus, which could be shared by many species and the specific name, which is unique to each species. Species names are in italics, cause they are in a foreign language, latin. For example, Homo sapiens.
2. Explain how the different types of planets in the solar system illustrates how the density was distributed throughout
the period of planetary formation.
Different types of planets in the solar system illustrate density distribution throughout the period of planetary formation. Mercury, Venus, Earth and Mars are dense whereas Jupiter, Saturn, Uranus and Neptune are less dense.
The Solar System consists of the Sun with eight planets orbiting it. The four inner planets are those closest to the Sun .They are Mercury, Venus, Earth, and Mars. They are smaller and composed of metals and rocks and hence are dense. The four outer planets are Jupiter, Saturn, Uranus, and Neptune. They are larger and mostly made of gases, so the overall density is low A planet's density is related to its composition.
Mercury is the smallest in size. Earth and Venus are almost the same size, whereas Mars is about half their size.
According to the nebular hypothesis, Uranus and Neptune exist in a region where the density of the solar nebula is reduced and longer orbital times is longer . The two are thought to have formed in orbits near Jupiter and Saturn, where more material was available, and to have migrated outward to their current positions over hundreds of millions of years.
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A unicorn has 400 chromosomes in its gamete cells. How many chromosomes would be found in its regular body cells? __________
Assuming the unicorn is a diploid organism, it must have 800 chromosomes. Diploid organisms have twice chromosomes as they have in their gamete cells. Noteworthy, this chromosomes in its regular body cells (somatic cells) will not be visible, they will be diffuse in its chromatin stage. Chromosomes are only visible when the cell reproduces itself.
The primary source of energy in much of the developing world is ___.
natural gas
coal
biomass
oil
Answer:BIOMASS
Explanation:BIOMASS
On a weather map lines joining places with same air pressure are
Answer:
Isobars: lines of constant pressure. A line drawn on a weather map connecting points of equal pressure is called an "isobar". Isobars are generated from mean sea-level pressure reports and are given in millibars.
In the graphs shown, which number shows a population that is most likely to create a new species?
a) 1
b) 2
c) 3
d) none of them
which pair of words has one bone each from the axial and appendicular skeletons
The pair of words that has each bone from axial and appendicular skeleton is: (1) cranium; femur.
Cranium is the skull bone that protects the brain from any mechanical injury. It belongs to the axial skeleton. Femur is the thigh bone, It is the thickest, strongest, and longest bone of the body. It is the part of appendicular skeleton.
Axial skeleton is the composition of bones that make up the core of the body. There are a total of 80 bones in the axial skeleton. This includes the bones of the skull, ear, neck, back, and the ribcage. Whereas the appendicular skeleton comprises the bones of the hands and legs.
The question in incomplete, the complete question is:
Which pair of words has one bone each from the axial and appendicular skeletons?
cranium; femurfemur; tibiaforamen; ramuspatella; femurTo know more about axial skeleton, here
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*The universe unit review practice*
Drag and drop the words into the correct locations. (2 points)
Dark |BLANK|
is the only explanation for the structures of the early universe. Clumps of it led to |BLANK| in the early universe.
Without it, the universe would
Have |BLANK|
A. Formation of galaxies B.matter
C.collapsed inward D.energy E. Remained uniform
Which correctly relate dark matter and dark energy to the Big Bang theory? Select the two correct answers (1 point)
A. Because of dark matter gravitational interactions cause galaxies to develop
B. through dark energy the universe is expanding at a faster and faster rate
C. dark energy is the source of 25% of the mass of the universe
D. without dark energy structures in the early universe would never have developed
The stars at the edges of a galaxy are rotating around the galaxy center at the same speed as the stars in the middle of the galaxy how does this provide evidence of dark matter?
A. dark matter emits light that astronomers need to see the orbital speed of the stars
B. dark matter absorbs light from outside the galaxy allowing the light of the stars in the galaxy to show the orbital speeds of the stars
C. dark matter provides the gravity that allows the stars to rotate at the same speed
D. dark matter subtracts gravity which allows the stars to rotate at the same speed
Drag and drop the words into the correct locations
Three pieces of evidence of universal expansion support the big bang theory the first piece of evidence which Edwin Hubble discovered is that ________. the use the second piece of evidence is the change in universal temperature. The temperature __________. The third piece of evidence is that cosmic microwave background radiation is found _______.
-has increased dramatically
-Has decreased dramatically
-Galaxies are moving towards each other
-Uniformly across the universe
-Galaxies are moving away from each other
Answer:A.
Explanation:
True or FalseNatural selection goes from more to less complex over time as adaptations are weeded out through natural selection.
The statement is false
Explanation:
This is a subject that is still being debated, however I believe that:
-the theory of evolution by natural selection explains the emergence of biodiversity
HURRYYYY
Even after pesticides are approved for use and sale, companies must continue testing them to ensure they do not cause long-term harm to wildlife or the environment.
True or False
Answer:
TRUE
Explanation:
What are the functions of the different body systems and how do they interact
with each other?
Nervous System-
Digestive System-
Circulatory System-
Respiratory System-
The functions of the different body systems
Nervous System - nervous system serves as the brain and command center for your body
Digestive System - help to digest the food
Circulatory System -To provide the lungs with oxygen
Respiratory System - helps to breathe
BriefingNervous System - nervous system serves as the brain and command center for your body. Your motions, thoughts, and automatic reactions to the environment are all controlled by this system, which is located in your brain. and Other bodily functions and systems, such digestion, respiration, and sexual development, are also under its control . Your nervous system can suffer harm from illnesses, mishaps, poisons, and normal aging.
Digestive System - The liver, pancreas, and gallbladder are all components of the digestive system, which is often referred to as the GI tract or digestive tract. A lengthy, twisted tube from the mouth to the anus is the GI tract, which is made up of several hollow organs. The mouth, esophagus, stomach, small intestine, large intestine, and anus are the hollow organs that make up the gastrointestinal tract (GI tract). the pancreas, the liver, and the
Circulatory System - To provide the lungs with oxygen, the circulatory system (cardiovascular system) pumps blood from the heart to them. The heart pumps oxygenated blood through the arteries to the rest of the body. Veins bring oxygen-depleted blood back to the heart to restart circulationtion. Your circulatory system is essential for the health of your muscles, tissues, and organs.
Respiratory System - The Respiratory system is the collection of organs and tissues that facilitates breathing. Your blood vessels, lungs, and airways make up this system. The muscles that drive your lungs are a part of the respiratory system as well. Together, these elements aid in the body's oxygen circulation and waste gas elimination (including carbon dioxide).
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The figure above is an example of what type of reaction?The hydrolysis of a triglyceride.© The dehydration of a dipeptide.RH H=0dipeptideThe hydrogen bonding of two compounds of water.The dehydration of a disaccharide.
This is a type of dehydration reacto to form a dipeptide molecule
Which means that a female produces an egg that retains inside the her until it hatches?A) OviparousB) OvoviviparousC) ViviparousD) Self incubation
Traditionally, there are three modes of reproduction:
• Oviparity,, where the embryos develop in an egg outside the parent. For example, chickens.
,• Viviparity,, where the younglings develop inside the body of the parent, are supported by them, and are born live. For example, humans.
,• Ovoviviparity,, where the embryos develop inside the parent but without depending on them, usually means the ,production of an egg that is retained until it hatches., For example, white sharks.
This means B is the correct answer
Complete your scientific explanation for the question:
How did the UCSD population become bolder than the mountain population over the last 60 years?
**REMEBER: Use CER (Claim-Evidence-Reasoning). Use a minimum of 3 pieces of evidence.
**Use the information from your table you created in the lesson to help you answer the prompt.
C= 3 points
E= 3 points for each piece of evidence
R=3 points
Total 15 points
Since both populations descended from the same progenitor, natural selection led to them becoming bolder. The other juncos got the behavior, such as boldness having lower levels of CORT, from the ancestor who was at UCSD and stayed there. This ancestor had differences in their heritable features.
What is scientific explanation?
a description of a situation, action, or idea that uses a pre-existing body of knowledge from science as the basis for its premises. The typical explanations include ontogenic, which links the phenomenon to a universal set of developmental stages, reductionistic, which describes a phenomenon in terms of the conditions that have been observed to produce it, empiricistic, which describes a phenomenon in terms of the conditions that have been observed to produce it, and metaphoric or categorical, which links a phenomenon to other phenomena that are already understood and similar to it in some significant ways. A theory is what is commonly referred to as such a systematic explanation.
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What is the article, "World Without Waste" by Rick
about.
The article, "World Without Waste" by Rick is all about about recycling as well as reuse as a part of sustainable packaging form of initiatives.
What is the "World Without Waste" about?There are a lot of plastic trash litters the seashore close to Athens, Greece. For every person on the planet, the globe has produced more than 1 metric ton of plastic, much of which is said to be clogging up the oceans and the environment.
Landfills are overflowing with plastic garbage, polluting cityscapes, choking waterways with vast fields of detritus, and killing aquatic life that eats everything from used fishing gear to disposable food containers.
Hence, Environmentalists and others want to limit plastic trash by recycling it or lowering the amount of plastic that is produced.
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A sailor on a ship dropped a message in a bottle off the east coast of the United States. The bottle is least likely to make landfall on the...
East coast of Asia
East coast of North America
East coast of South America
West coast of Africa
(A. East coast of Asia) It should least likely to make landfall on the East coast of Asia.
Which predator is best adapted to its environment?
a.
Predator 1
b.
Predator 2
c.
Predator 3
d.
Predator 4
Edge2020
The predator is best adapted to its environment is Predator 4 Thus, option D is correct.
What is predator?Predator is defined as the organism which has able to capture the organisms and eats the prey as well as they are known as the hetrotrophs because they depend on other for their food and eating needs.
The stage of dormancy has the stage when seed gets closed and not able to germinate as it closes its outer wall. The term hibernation has been idefined as the particular time period in which the organism hybernate himself for the period of time when the weather or the outer environment has not been safe, or fit for his survival. Generally, when it has been too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.
Therefore, The predator is best adapted to its environment is Predator 4 Thus, option D is correct.
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Answer: It is option D
Explanation:
because it has a balanced amount of moths
Please help with the question below.
Explanation:
the cycling of the oxygen is from the plant to the sea upwards to the sky to the sun
the cycling of the carbon dioxide is from the plant itself also from the mosquito larvae to the algae and to the air
What term refers to the growth and/or elongation of some cells but not others?
a.
growth changes
b.
cell lengthening
c.
divergent growth
d.
differential growth
Growth changes refers to the growth and/or elongation of some cells but not others.
The correct option is A.
How is a cell defined?A cell is a collection of cytoplasm that is held together on outside by a cell membrane. Cells are the fundamental structural units of living matter and make up all living things. They are usually tiny in size. Numerous organelles, including one or more nucleus, are present for most cells and perform a range of functions.
What is cell function?They give the body structure, absorb nutrients from meals, turn those into energy, and perform certain tasks. Additionally, cells are able to replicate themselves and carry the body's genetic material.
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The scientists have continued to study a new area in South Africa, and they want to predict how many wild dogs could occupy this area. Here are some facts about the new area. In the new area:The wild dogs will feed on Impala and Kudu. The growth rate of the impala and kudu is similar to the rate in Northeastern SA and Northern SAThe prey density is twice as high as in Northern SA (30 Impala / km2 and 8 Kudu per km2)The average rainfall is between 400 and 650The amount of available prey biomass is similar to Northeastern SAHow many wild dogs could this area support?2412366
We have the data of the known areas
The new area is similar to Northeastern SA and Northen SA in terms of the type of prey and the growth rate, as well as rainfall.
And even if the density is greater, the total biomass is similar to Northeastern SA, so the population that the new area can support must be similar to the one in there.
Northeastern SA has an area of 1000 km2, so, according to the next graph, it can sustain at least 29 individuals. This means the new area should be able to support around that same quantity.
Given the information and from the options, the answer would likely be 36.