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You should do the sport basketball, as it involves the body systems of the circulatory system and muscular systems.

Explanation:

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."