Please help me with these science questions about ecology!

Circle the letter of the choice that best completes the statement or answers the question.
11. Energy that is lost at each trophic level of an ecosystern is replenished by
a. heat.
b. nutrients.
sunlight
c. sunlight
d. organisms.
12. Besides energy, what moves through the organisms at each trophic level of an ecosystem?
a. organisms
b. nutrients
c sunlight
d. cycles
13. Evaporation and condensation a part of the
a. carbon cycle.
b. nitrogen cycle.
c phosphorus cycle.
d. water cycle.
14. Plants lose water to the air through
a. condensation
b. photosynthesis.
c. Their roots.
d. evaporation
15. Animals lose water when they
a. breathe in
b. urinate.
c breathe out
d. both b and c.
16. The major process by which water in the atmosphere is returned to the earth is
a. precipitation
b. evaporation
c. photosynthesis.
d. decomposition.
17. Autotrophs and heterotrophs use carbon-containing molecules for energy and for
a photosynthesis.
b. growth.
c decomposition
d. both a and b.
18. What do plants use in photosynthesis to make carbon-containing molecules?
a carbon dioxide
b. carbohydrates
c. fertilizer
d. oxygen
19. Heterotrophs get carbon-containing molecules by
a. making the molecules themselves.
b. feeding on other organisms.
c decaying.
d. growing.
20. When decomposers break down the carbon-containing molecules in dead organisms,
a. the dead organisms are converted to coal.
b. oxygen is released.
c carbon dioxide is released.
d. carbon dioxide is converted to energy-rich
carbon-containing molecules.

Answer:

(a) energy source, either sunlight or chemicals

Explanation:

Answer:

Earth's axis is tilted.

Explanation:

Answer:

Energy transformations are processes that convert energy from one type (e.g., kinetic, gravitational potential, chemical energy) into another. Any type of energy use must involve some sort of energy transformation.

Energy must obey the laws of thermodynamics.

Thermodynamics is the study of how energy changes from one type to another. The laws of thermodynamics apply to energy and energy conversions.

Explanation:

hope it help to you

Answer:

Important for identification.

Explanation:

Knowing the cranium size, dentition, number of toes/fingers, flexibility of joints, locomotion styles, body size, the skeleton, etc. of primates is very important to identify the specie of primates group. Different primates have different cranium size, dentition, fingers or toe's number, flexibility of joints, locomotion styles, body size, the skeleton etc so these information helps in identification and grouping of primates during classification.

Answer:

B. The increase is due to industrial point source pollution.

Explanation:

Pollution is the release of harmful substances into land, air or water. The harmful or toxic substances are called POLLUTANTS. According to this question, a community discovers via analysis that its river is now polluted with small amounts of over 20 different chemicals.

This chemicals is a pollutant that can likely emanate from industrial companies and industries that produces these harmful chemicals as waste. Hence, the increase is due to industrial point source pollution.

Answer:

an increase in available water and space

Explanation:

Answer:

A

Explanation:

Answer:

C

Explanation:

When an organism eats anothee organism matter transfers

Answer:

I don't even know what this is, I need more information

Answer:

Independent variable = time (in centuries)

Dependent variable = Percentage of all people in poverty

The conclusion: As centuries progressed, the percentage of all people in poverty decreased

Please give brainliest if you are happy with my answer :)

Answer:

The source of energy that is used to power the movement of contraction in working muscles is adenosine triphosphate (ATP) – the body's biochemical way to store and transport energy. However, ATP is not stored to a great extent in cells. So once muscle contraction starts, the making of more ATP must start quickly.

Answer:

adenosine triphosphate (ATP)

Explanation:

Creatine phosphate can supply the energy needs of a working muscle at a very high rate, but only for about 8–10 seconds.

Answer:

Hunting and Gathering

Explanation:

The first humans were nomads who traveled with their food. This means that they would seasonally move across regions hunting the animals there and gathering plants to eat. These people existed before civilization started. Centuries later, these people would develop agriculture and start society. However, the first people were still hunter-gathers.

In this scenario, natural selection is affecting many populations of birds with different beak morphologies, which affects how well they can eat the available foods. Each flock initially consisted of 10 birds, but over many generations, natural selection favored some traits over others, changing the population size.

One flock, referred to as "Flock," had the greatest number of second-generation birds because it was the most successful at feeding. Another flock, known as "Flock," had the worst feeding results and has had the greatest shrinkage.

Learn more about Natural selection, here:

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Your question is incomplete, most probably the complete question is:

The flocks all started with 10 birds. Flock was the most successful at feeding, so it will have the greatest number in the second generation. Flock was the least successful at feeding and has shrunk the most. With three foods available, natural selection has favored Flock , which has increased the most in the first three generations. Meanwhile, Flock has declined the most because its beak was the least successful phenotype for the food available.

It is used to level ground, spread out ground coverings, and improve the overall quality of large areasof ground.

Answer:

Answer:

These cells have a circular DNA molecules

Explanation:

Sorry cant help and dont hit the link its a virus

Answer:

The answer is that they store oxygen in their blood, and in their muscles rather than in their lungs. Marine mammals have a very high blood to body volume ratio. The mammalian diving reflex allows mammals to lower their heart rate and ultimately survive submersion in water for extended periods of time.

Explanation:

The reason why blood volume played a vital role should be explained below.

In the case when the oxygen is stored in the blood & in their muscles instead of their lungs so this represents the role of blood volume. Also, marine mammals contain a high blood-to-body volume ratio. It permits the mammals for lowering the rate of heart and survive the submersion in the water for extension of the time. This is the main reason.

Learn more about volume here: https://brainly.com/question/13707148

Answer:

There are plenty of resources.

No predators are present.

Explanation:

There r plenty of resources + no predators

Exponential population growth happens when there are plenty of resources and no predators are present.

Population growth may be defined as the change in population per unit of time.

Exponential growth occurs in the population of continuous breeders. For example, some insects, humans, bacteria, etc.

Exponential population growth requires an enormous amount of resources in habitat and no predator influence.

Therefore, exponential population growth happens when there are plenty of resources and no predators are present.

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Answer:

I'm not 100% sure but my beat bet is: Carbon moves from plants and animals to soils

Answer:

On grazed land, cattle trample some of the plants into the soil increasing carbon content. In forested areas, dead plant material is incorporated into the soil by worms and other soil organisms. On cropped land, it doesn't very much, causing soil degradation.

Explanation:

Credit to Alan Willoughby, former Maths Teacher, Earth Scientist, Natural Therapist, (1974-2018) for the answer

Answer:

Hippopotamus

Explanation:

Hope it help ya

Answer:

Xylem

Explanation:

Xylem is one of the vascular tissues or conducting tissues in plants. It primary function is to transport water, solutes, minerals, from the plants root and leaves to the rest of the plants. It also provide physical support to the plants and it consist of specialised vessels that contain tissues called tracheary elements.

here ya go! It wouldn’t let me submit for some odd reason so I just took a screenshot and am uploading that instead. good luck!

Answer:

B) meiosis

I hope that helped

c.) both meiosis and mitosis

When a haploid cell undergoes mitosis, it produces two haploid daughter cells.

Answer:

Location A

Explanation:

Coastal areas have milder temperatures since they are close to water and water retains heat better than land (it's harder to warm it up and harder to cool it down). Due to this property of water, the location with the least temperature fluctuation would be the answer. Location A has the smallest range between the highest and lowest annual temperatures, making A the best answer choice. I hope I helped and that it's not too late for you.

Answer:

A. Energy cannot be created or destroyed

Explanation:

I answered the closest to the correct choice

Answer:

B Salinity increase because salt from the ice caps flows into the ocean

Explanation:

took the test

Answer:

1 is your answer

Explanation:

Mutualism is where one organism helps another organism where both benefit and none are harmed

Answer:

It is A, I believe .

Explanation:

More people want the product so business needs to boom. You need more money to produce the product, and to obtain more money for the product, you need to raise the price of the product. Hope this helps you!