Question

Which hypothesis is supported by evidence from ecological research? A. Decomposers are the final stage in...

Which hypothesis is supported by evidence from ecological research?

A. Decomposers are the final stage in the food chain.

B. Producers depend upon consumers more than on decomposers.

C. Decomposers help to recycle energy from food chains.

D. Producers use nutrients that decomposers help to recycle.

The answer is D, but A and C also seem legit. Why are they ruled out?

Plus, I don't completely understand what D means. Could you rephrase that sentence in a easier way so I can understand?

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