HELP! NOW! A. Protons will no longer accumulate on one side of the membrane.
B. ATP production will stop, because the proton gradient will be reversed.
C. Oxygen production will be blocked, because electron flow will be halted.
D. The Calvin cycle will be inhibited, because NADPH production will cease.

D. The Calvin cycle will be inhibited, because NADPH production will cease.

Explanation:

Paraquat is an herbicide that interferes with electron flow in photo system which mean the plant could not produce NADPH

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.