Question

1. Which of the following has the smallest effect on the rate of photosynthesis?

A. Light intensity

B. Temperature

C. Air Pollution

D. Carbon Dioxide concentration

Answer 1

air pollution has the smallest effect on the rate of photosynthesis

Answer 2

C. Air Pollution because light is needed to do photosynthesis as well as carbon dioxide. Temperature is also affecting the rate of photosynthesis (temperature too high the enzymes are denatured) so the answer would be C.