What is the main difference between c3 and c4 carbon fixation? a. in c3 carbon fixation, plant stomata are open during the day, while they are open at night for c4 carbon fixation. b. c3 processes take place throughout the leaf, while c4 processes take place in the inner cells. c. c3 carbon fixation is more common in areas with high light intensity than c4 carbon fixation. d. c3 processes are more efficient than c4 processes in high temperatures.

Answer;

C3 carbon fixation is more common in areas with high light intensity than C4 carbon fixation.

Explanation;C3, C4 and CAM are different processes that are used by plants in carbon fixation during the process of photosynthesis, in which plants make their own food.The main difference results from the way plants extract carbon dioxide from sunlight and depends on the habitat of the plant. C3 photosynthesis results in the production a 3-carbon compound through the calvin cycle, while that of the C4 makes an intermediate 4-carbon compound which then splits into three-carbon compound in the calvin cycle.

I’m going to go with b!