Estuaries

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Any single identifiable source of pollution from which pollutants are discharged.

A living organism that gives us an idea of the health of an ecosystem.

The measure of cloudiness in a body of water.

The emission of light by living creatures through biochemical reactions.

Pollution that occurs as a result of multiple factors that can not be specifically identified.

The amount of dissolved salts in a body of water.

A substance used to kill, repel, or control organisms that are considered to be pests.

An area of water where the fresh water from a river meets the salt water from the sea.