A student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants. A constant in this experiment is the A. Air temperature at which the corn plants were grown
B. Amount of carbon dioxide used by the corn plants
C. Volume of oxygen produced by the corn plants
D. Number of corn plants used

A) the air temp at which the corn plants are grown

Explanation:

The independent variable is the one that changes based on what problem/ question the experimenter is trying to solve. The student is trying to see if the air temp has an affect on the rate of photosynthesis so they whorls use various temps and measure the rate

answer: i cant find your answer. do u have another way i can answer it for you : )

explanation:

i think the answer would be d