Answer: Ecosystem
Explanation: An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. A niche refers to the role of a species in its ecosystem. A habitat is the physical environment in which a species lives and to which it is adapted.
That the one with natrual sunlight is healthier than the other one
<h3>A. Cellulose </h3>
Answer:
It is made of matter and contains twenty-four molecules.
I'm not sure but but i think the answer will be:
A. additive genetic variance times the selection differential.