<span>D. take energy from the sun and make it usable for living things.
Producers are plants. Plants make energy from the sun through the process of photosynthesis and other living things (such as animals) eat the grass (known as grazing)
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Answer:
c. decaying plant and animal remains
This is because the modern lifestyle we're living and people are living in the US is very taxing and can cause people to feel extremely bad about themselves for prolonged periods of time. Furthermore, it's also possible people/doctors are misdiagnosing depression and saying someone is depressed when he or she actually isn't.