Carbon dioxide is the greatest impact on earth temperature because it act like a green house effect. which is why today we have too much carbon in the atmosphere which is causing the ice in the north pole to melt leaving the animal with no ice.
Therefore, there is only 1 net carbon produced to play with for each turn. To create 1 surplus G3P requires 3 carbons, and therefore 3 turns of the Calvin cycle. To make one glucose molecule (which can be created from 2 G3P molecules) would require 6 turns of the Calvin cycle.(I think)
Answer:
decrease in speed is the answer
Climate change as been the most of the problem
