<span>Arms of primates and wings of birds are variations of FORELIMBS</span>
ATP is your answer here :)
Well, the high energy and heat found in the photons of sunlight allow plants to make their own food, sustaining them long enough to be eaten by us, or to be eaten by animals about to be eaten by us. Plus we get direct warmth from the sun. These things mean that the sun is what keeps all organisms alive in the first place.
Answer:
It would be >> C plant cells
<span>D: Viruses
I hope helped ^-^</span>
