What causes sediment from construction sites to get in rivers and streams?

Sewage from our homes goes to

Which instrument is used to measure water clarity?

Amount of dissolved salt in water is called

The health of an ecosystem is directly related to

Which is NOT a way to test water quality?

Excessive nutrients cause

What is a safe pH for aquatic life?

Oxygen in the water comes from the atmosphere and

In an excellent stream there would be a high number of

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