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Closer Look Questions
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Water Quality and Wastewater Treatment



1

What is a water pollutant?
2

Describe the primary stage treatment that takes place in a waste treatment plant.
3

Describe the secondary stage treatment that takes place in a waste treatment plant.

Estuary Pollution



4

What is an estuary?
5

What has been an important factor in increased pollution?
6

Why are excessive nutrients considered pollutants?

Health of the Chesapeake Bay



7

Why has the blue crab population of Chesapeake Bay declined so drastically?
8

What has contributed to the decline of underwater grasses in Chesapeake Bay?





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