What happens to the rate of photosynthesis when whether gets cold in many plants

Molecules of Carbon dioxide supply the carbon components of carbohydrates. In many plants, the rate of photosynthesis decreases when the weather becomes very cold. If the temperature are above or below this range, the enzymes may be affected, slowing down the rate of photosynthesis.

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

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

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