Watersheds

Front

Do we all live in a watershed?

Back

True

Front

The water that fills lakes and rivers

Back

surface water

Front

Most water pollution is the result of __________________.

Back

human impacts

Front

Eutrophication is caused by

Back

runoff of excessive fertilizer and nutrients that create algal blooms

Front

An area where aquatic animals and plants have stopped thriving due to extremely low dissolved oxygen levels (ex. the gulf) is known as a:

Back

dead zone

Front

How do nitrate levels affect the health of a water system?

Back

High nitrate levels can cause algal blooms. When the algae die bacteria tie up the oxygen in the water and result in low oxygen levels for other aquatic organisms.

Front

Which would a scientist expect to find in a lake that experienced a sudden increase in nitrate levels? Options: an increase in temperature, an increased number of fish, an increase in dissolved oxygen, an increased amount of algae and aquatic plants

Back

an increased amount of algae and aquatic plants

Front

Why is dissolved oxygen an important water quality indicator?

Back

Because many aquatic organisms need sufficient dissolved oxygen to survive

Front

The measurement of soil, silt, and other material that is suspended in water is called

Back

turbidity

Front

What major river watershed are we a part of at NHS?

Back

Little Arkansas River