As many as there are needed. you just can't have many independent variables
je ne comprends pas ton questiom
Answer:
Competition for sunlight leads to taller trees.
Explanation:
The resulting effect on the gene pool of that population would be competition among the species of that environment. In that environment only the more fitter will survive while the others will be eliminated. For the competition of sunlight, the shorter plants will be eliminated due to not receiving sunlight and the tall trees are the dominant species due to more fitness and survival ability of the species.
Answer:
To conversion of light energy into chemical energy stored in organic compounds (sugar).
