How does pollution threaten coral reefs? Answer using at least 3 complete sentences.

When pollution occurs on land it travels to the waters which causes the pollutants to enter the water. When pollution enters the water, it damages the algae on the coral. It also lowers water quality, smother the coral reefs, and it speeds the growth of the damaging algae. All these make the coral reefs more susceptible to disease which stops the reefs growth and reproduction.

Explanation:

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the answer is:

carbon dioxide

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