How do the light reactions help the Calvin cycle? a. they break down macromolecules
b. they create hydrogen ions
c. they provide energy carriers
d. they provide photons

c. They provide the energy carriers

Explanation: Light energy (photons) drive this overall reaction:

2H2O + 2NADP +3ADP + 3Pi —-> 2NADPH + 3ATP + O2 + 2H+

and the ATP provides the energy for the light-independent Calvin Cycle, which also uses NADPH from the light-dependent reactions.

C. they provide energy carriers

Explanation:

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oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean

when it is at an intermediate population density