It contracts on its own without input. The answer is C.
Hope that helped you.
The right answer is pluripotent
<span>Stamen produces pollen so the best answer is stamen.
I hope it helped :)</span>
Answer:
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I am going to assume you meant the "first trophic level" of the ecosystem. The first tropic level of an ecosystem is made up of producers, so the answer is C, Acorns.