Which explains how the calvin cycle and the krebs cycle differ?
a.) the calvin cycle uses atp to make glucose.
b.) the krebs cycle uses adp to make glucose.
c.) only the calvin cycle occurs in plant cells.
d.) the krebs cycle only repeats in animal cells.

I believe the answer is: The Calvin cycle uses ATP to make glucose.

 The Krebs cycle on the other hand uses ADP to make ATP. This chemical reaction exist in all Aerobic organisms, including plants, animals, or single cell organism.On top of that, In addition, krebs cycle also provides precursors of certain amino acids and the reduction of  agent NADH,

"The Calvin cycle uses ATP to make glucose" is the one among the following choices given in the question that explains how the Calvin cycle and the Krebs cycle differ. The Krebs cycle does just the opposite. The correct option among all the options that are given in the question is the first option or option "A".