Water molecules made by living things become part of the water cycle through
A. aerobic respiration
B. the dark reactions
C. alcoholic fermentation
D. the Krebs cycle

D

Explanation:

One cycle of the Krebs Cycle consumed 2 water molecules.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.