Which of the following indicate that a water source is healthy?

Scientists test the Cape Fear River in August, and the dissolved oxygen levels are low. What is the most likely reason for this?

In which conditions are fish most likely to die in a lake?

Which pH levels are the best for marine organisms?

Turbidity is

Fish need dissolved oxygen levels over

0-6 on the pH scale is considered

8-14 in the pH scale is considered

7 on the pH scale is considered

Bioindicators are

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