Which of the following is NOT a requirement of natural selection?
Select one:
O a. genetic variation
O b. gene flow
O c. overproduction of offspring
O d. differential reproductive success

O b. gene flow

Explanation:

Populations tend to create more progeny than can survive to reproductive age.

i am going to guess that it is co2.

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation: