Answer:
Cones and rods in our eyes
WILL GIVE BRAINLIEST AND 30 POINTS!
Propane (C3H8) burns in oxygen to produce carbon dioxide gas and water vapor.
Write a balanced equation for this reaction.
Calculate the volume of propane measured at STP that could be produced from 21.13 g of propane.
Answer:
11.6 L will be the number of liters of carbon dioxide measured at STP.
Answer:
I can help. I don't think this should go in Biology, but eh whatever.
Explanation:
1. Write a balanced equation for this reaction.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We have propane (C3H8) that burns in O2(g) to form CO2(g) and H2O(g)
We have to write an unbalanced combustion
C3H8(g) + O2(g) ---> CO2(g) + H2O(g)
Then we have to balance it:
C3H8(g) + 5 O2(g) ----> 3 O2(g) + 4 H2O(g)
~~~~~~~~~~~~~~~~~~~~~~~~~~~
I'm sorry i only know the first one :(
Name the part of the cell where photosynthesis takes place.
Answer:
chloroplasts
Explanation:
Sorry I don't have an explanation
Which best describes lymph?
Lymph is a clear liquid that flows in arteries.
Lymph helps protect the body from pathogens.
Lymph contains only protein and white blood cells.
Lymph allows for the transport of oxygen throughout the body.
Answer:
The lymphatic system is made up of tissues and organs that help the body get rid of toxins,waste. Lymphatic fluid cointains infection fighting white cells through out the body.
Explanation:
Hope this helps you out a lot
Answer:
Lymph helps protect the body from pathogens.
Explanation:
It seems to be the best option here
need an answer asap. answer the 3 guide questions
asap.
Answer:
Explanation:
Q1
1- Muscle sprains and strains (Knee wounds can result from a blow to or turn of the knee; from inappropriate landing after a bounce; or from running as well difficult, as well much, or without a legitimate warmup)
Tears of the ligaments that hold joints together (Rapidly changing headings, such as cutting or turning maneuvers, which puts unordinary weight on the knee causing the tendon to extend or tear Landing clumsily on the knee, which may happen after a bounce in volleyball or basketball)
Tears of the tendons that support joints and allow them to move (Most tendon wounds are the result of progressive wear and tear to the ligament from abuse or maturing. Anybody can have a ligament damage. But individuals who make the same movements over and over in their occupations, sports, or day by day exercises are more likely to harm a ligament. A ligament harm can happen abruptly or small by small.)
Which of the following is not an habitats for extremophiles
a the Atlantic Ocean.
b. an acid mine wash.
c. inside rock
d. a salt-evaporating pond.
e. 100C water.
Answer:
2 an acid mine wash
Explanation:
2 an acid mine wash
Name the three sources of sulphur in the Earth's crust
Answer: Hot springs ,volcanic regions and mountains.
Explanation
for an organism to belong to class mammalia,it should have
A . spinal cord
B . ear drum
C . limbs
D . mammary glands
explanation:d. mammary glands
Answer:
All the Mammalia have mammary glands.
Therefore, the answer is mammary glands.
Explanation:
I am sure that mammary glands are present in Mammalia.
I hope this helps ☺️ ❤️
Pls help it’s timed
Answer: A and D
Explanation:
A viral outbreak in a city needs to be traced to its source. How can wastewater be used to trace the viral outbreak?
O it can be collected at different locations in the city and tested for the virus.
O It can be treated at all locations to prevent viral spread in drinking water.
O It can go through ozonation and chlorination to prevent virus spread.
Viral outbreaks are spread through wastewater treatment facilities
Answer:
a
Explanation:
it a
The wastewater can be used to trace the viral outbreak by going through ozonation and chlorination to prevent virus spread. The correct option is C.
What is ozonation of water?One of the most powerful oxidants is ozone, a gas composed of three oxygen atoms (O3).
Ozonation is a type of advanced oxidation process that produces highly reactive oxygen species capable of attacking a wide range of organic compounds as well as all microorganisms.
Drinking water purification processes include chlorination and ozonation.
The primary distinction between chlorination and ozonation is that chlorination uses chlorine to disinfect drinking water, whereas ozonation uses ozone to disinfect drinking water.
When compared to chlorination, ozone has a higher disinfection effectiveness against bacteria and viruses.
Furthermore, the oxidizing properties can reduce the concentration of iron, manganese, and sulfur, as well as reduce or eliminate taste and odor issues.
Thus, the correct option is C.
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The roots and leaves of a plant grow:
at different speeds
at the same speed
Answer:
At different speeds.
Explanation:
Which is an interaction between the geosphere and the biosphere that damages the atmosphere?(1 point)
the erosion of rock in the mountains
the erosion of rock in the mountains
the mining and burning of fossil fuels
the mining and burning of fossil fuels
dumping of pollutants into a river
dumping of pollutants into a river
overfishing of edible species
Answer:The geosphere consists of the core, mantle and crust of the Earth.
The atmosphere contains all of the Earth’s air and is divided into troposphere, stratosphere, mesosphere, thermosphere and ionosphere.
The hydrosphere contains all of the solid, liquid and gaseous water on Earth, extending from the depths of the sea to the upper reaches of the troposphere where water is found. Ninety-seven percent of the hydrosphere is found in salty oceans, and the remainder is found as vapor or droplets in the atmosphere and as liquid in ground water, lakes, rivers, glaciers and snowfields.
The biosphere is the collection of all Earth’s life forms, distributed in major life zones known as biomes: tundra, boreal forest, temperate deciduous forest, temperate grassland, desert, savannah, tropical rainforest, chaparral, freshwater, and marine.
[1] Although the four systems have their unique identities, there is substantial interaction between them. Environmental scientists study the effects of events in one sphere on the other spheres. For example, a volcanic eruption in the geosphere may cause profound direct and indirect effects on the hydrosphere, atmosphere and biosphere as follows:
Example 1 (Volcano) On May 18, 1980, Mount Saint Helens, in the state of Washington, erupted. This event altered the surrounding environment, and provided scientists with an opportunity to study the effects of volcanic eruptions on the geosphere, hydrosphere, atmosphere and biosphere. Such studies are vital because volcanic eruptions will continue to occur, and will have increasing impact on humans as people continue to settle lands closer to dormant volcanoes. The following are but a few of the myriad of interactions resulting from a volcanic eruption.
Volcano >> geosphere >> atmosphere >> hydrosphere >> biosphere
Volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. These particles serve as nuclei for the formation of water droplets (hydrosphere). Rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere). Particulate matter in the air (atmosphere) falls out, initially smothering plants (biosphere), but ultimately enriching the soil (geosphere) and thereby stimulating plant growth (biosphere).
Volcano >> geosphere >> hydrosphere >> biosphere
Volcanoes (events in the geosphere) may release a substantial amount of hot lava (geosphere), which causes mountain glaciers (hydrosphere) to melt. Mudflows (geosphere) and flooding may occur downstream from volcanoes and may inundate streamside communities (biosphere).
Volcano >> geosphere >> atmosphere >> biosphere >> geosphere
Volcanoes (events of the geosphere) release a large amount of carbon dioxide (atmosphere), the raw material for sugar production in plants (biosphere). This may increase photosynthetic production and eventually increase the amount of biomass, which, after a very long time, forms coal and oil deposits (geosphere).
Volcano >> complex interactions
Volcanoes (geosphere) may emit large quantities of sulfur dioxide (atmosphere). When atmospheric sulfur dioxide combines with water (hydrosphere), sulfuric and sulfurous acid form. Rain (hydrosphere) may bring these acids to the Earth, acidifying soils (geosphere), lakes and rivers (hydrosphere). Acidic water leaches nutrients from the soil (geosphere) into the water table (hydrosphere), making the soil less fertile for plants (biosphere), and the subterranean water supply (hydrosphere) less potable for humans (biosphere). Acid rain falling on lakes and streams reduces the pH of the water (hydrosphere), which may result in a decrease in phytoplankton and zooplankton growth (biosphere). If photosynthesis is reduced, atmospheric concentrations of carbon dioxide can build up and stimulate global warming (atmosphere) which may contribute to increased melting of glaciers (hydrosphere)
Explanation:
Both the mining and burning of fossil fuels are interactions between geosphere and biosphere which damages the atmosphere. Thus, correct option is B.
What is atmosphere?The atmosphere contains air which is a blanket of gases that surrounds the planet- Earth and the gases that we breathe. The atmosphere is held in the position near the Earth surface by gravitational attraction. A barometer is an instrument used to measure the air pressure. Argon, oxygen and nitrogen are some of the main gases which constitutes the atmosphere.
The geosphere of Earth consists of core, mantle and crust of the planet. The atmosphere consists of all Earth's air, gases and it is divided into different zones on the basis of height i.e., troposphere, stratosphere, mesosphere, thermosphere and ionosphere.
The atmosphere provides geosphere, all the heat and energy required for the breakdown of rock and erosion. The biosphere of Earth receives all the gases, heat, energy, and sunlight from the atmosphere.
Therefore, correct option is B.
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the inner ear is a what filled chamber?
Cells are made of organelles, specialized structures that each perform specific functions that help the cell maintain
homeostasis. This is much like the body systems work together to help the body maintain homeostasis. Consider each
of the organelles and body systems paired below. Which pairs perform similar functions? Select ALL four that apply.
A)
nervous system: nucleus
B)
digestive system: lysosome
circulatory system: ribosome
D)
respiratory system: mitochondria
E)
integumentary system: cell membrane
Answer:
A) Nervous system; nucleus
B)Digestive system; lysosome
D)Respiratory system; mitochondria
E) Integumentary system ; cell membrane
The pair that perform similar functions are nervous system: nucleus, digestive system: lysosome, respiratory system: mitochondria, integumentary system: cell membrane. The correct options are a, b, d, and e.
What is homeostasis?The state of constant internal, physical, and chemical conditions maintained by living systems is known as homeostasis.
This is the state of the organism's optimal functioning, and it includes many different factors, such as core temperature and adequate fluid, being kept even within those pre-set limits.
Homeostasis is the state of balance within all physical systems required for a body to function properly and survive.
The nervous system and nucleus functions the same, as the nervous system makes control and co-ordination with whole body, nucleus also controls all cell's activities.
Digestive system works by breaking down the food and making it into its simplest form, just like that lysosomes also bears digestive enzymes.
Just like respiratory system produces energy by oxidation of food, mitochondria also provides energy to cell by generation of ATP.
The integumentary system is the protection layer of the body that prevents outside material to come inside or vice versa, just like cell membrane of the cell.
Thus, the correct options are a, b, d, and e.
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During the falling phase of the action potential, the membrane hyperpolarizes beyond the resting membrane voltage. The phenomenon is due to: _________
"Can dogs identify colors?" is an example of a scientific question. "Are dogs better pets than cats?" is not. Use complete sentences to explain the difference between these questions and why only one is scientific.
Answer:
Dogs can see some colors
Explanation:
Dogs ra ebetter than cats.
Why would there be competition between members of the same species
Answer:
for food
Explanation:
animals often compete over common resources such as food and shelter
describe the uptake and movement of water from the soil to the leaves
Answer:
After traveling from the roots to stems through the xylem, water enters leaves via petiole (i.e., the leaf stalk) xylem that branches off from that in the stem. Once water leaves the xylem, it moves across the bundle sheath cells surrounding the veins.1-Water is passively transported into the roots and then into the xylem. 2-The forces of cohesion and adhesion cause the water molecules to form a column in the xylem. 3- Water moves from the xylem into the mesophyll cells, evaporates from their surfaces and leaves the plant by diffusion through the stomata.Plant water uptake, or transpiration, represents the process by which water in soil is drawn into plants and returned in gaseous form to the atmosphere through leaf stomata.Water transport also occurs at the cellular level, as individual cells absorb and release water, and pass it along to neighboring cells. Water enters and leaves cells through osmosis, the passive diffusion of water across a membrane.Most of the water that a plant takes in enters through the root hairs.
what is the general chemical equation for an endothermic reaction?
Answer: reactants + energy = product
Explanation: answer
need an answer, please need an answer, please.
answer the 4 guide question
no copy
Answer:
1. pulmonary circulation is whereby deoxygenated blood from body tissue is pumped from the heart to the lungs through the pulmonary artery and oxygenated blood back to the heart thru pulmonary vein.
systematic circulation is whereby deoxygenate blood from the body tissues return to the heart via the venacava .
Which combination from Table I correctly assigns the function of each of the body systems shown in Diagram I?
Answer:
Combination 2
Explanation:
What is the most likely way this seed is moved
halal hshuwhuduyduywgjdyaegcevjcqyguqwk
Answer:
ksjskabsjalajgsiwvzksvzoqvzoqvqk
Answer:
uigihdjjkgfdxcvbnm,;loiuytredsdfghjkpopbvghfdfgn
Explanation:
Why is diversity or variation important to a species?
Answer:
Genetic diversity is important because it could ensure that certain groups of individuals, species, or populations will be able to adapt to certain environmental factors. Thus, genetic variation helps the species in terms of its adaptability, survival, and its evolution
Explanation:
¿Que compuestos dañan la capa de ozono?
gente ayudenme por fis:(
Answer:
Algunos compuestos agotadoras incluyen:
clorofluorocarbonos (CFC)
halón.
tetracloruro de carbono (CCl4)
metilcloroformo (CH3CCl3)
hidrobromofluorocarbonos (HBFC)
hidroclorofluorocarbonos (HCFC)
bromuro de metilo (CH3Br)
bromoclorometano (CH2BrCl)
Explanation:
¡espero que esto ayude!
what is the difference between psychrophilic and psychotroph? Please explain.
Answer:
Psychrotrophic microorganisms have a maximum temperature for growth above 20 degrees C and are widespread in natural environments and in foods. Psychrophilic microorganisms have a maximum temperature for growth at 20 degrees C or below and are restricted to permanently cold habitats
Explanation:
Answer:
The key difference between psychrophiles and psychrotrophs is that psychrophiles are microorganisms with an optimal growth temperature of 15 0C or lower, a maximum temperature below 20 0C, and a minimal growth temperature at 0 0C or lower while psychrotrophs are microorganisms that can grow at 0 0C but have an optimal
In which two ways does a hummingbird’s nervous system help it’s body’s cells get nutrients
Answer:
it controls the heartbeat
it controls the movement
which of the following statements st describes scientific research
Your answer → research typically uses a variety of sources.
How many nanometers are there in 520 meters?
O a. 520,000,000,000
b. 520,000,000
c. 520.000.000,0000
d 520.000.000,00
Answer:
520,000,000,000 Nanometers = A
Explanation:
which objective lens will still remain in focus when placed at the longest working distance from the specimen?
Answer:
10x objective lens
Explanation:
The objective lens that will still remain in focus when placed at the longest working distance from the specimen is 10x objective lens.
Microscope objectives are set up with a short free working distance. Working distance is knot to be the point or distance from the front lens element of the objective to the closest surface of the coverslip when the specimen is in sharp focus.
The distance between the objective lens and the specimen, when the specimen is in focus, is called the working distance of the lens. The greater the magnification of the lens, the less the working distance; that isConclusively, a 10x objective lens is a low power objectives that has a longer working distances than high power objectives
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Question 1 of 10
Which statement describes a controlled experiment?
O A. It includes only an experimental group.
B. It includes a control group and an experimental group.
gontrol
C. It includes only a control group.
O D. It includes more than one control group.
Answer:
B. it includes a control group and an experimental group.