Answer
The answer is niche.
Explanation:
The definition of niche in biology is the organism's role in an ecosystem, which can be viewed as a community.
The endergonic is positive
A. the products of photosynthesis serve as the reactants and cellular respiration to provide chemical energy.
Because photosynthesis produces oxygen and cellular respiration needs that oxygen to produce energy and carbon dioxide, the carbon dioxide is used to create energy and oxygen for the plant.