Exam 18: Water Pollution

A 2006 U.S. Supreme Court ruling that resulted in the EPA dropping enforcement actions on at least 1,500 water pollution cases and the exclusion of the drinking water sources of over 117 million Americans was based on the court's interpretation of the word

The Clean Water Act has turned out to be ___________ in achieving its point source goals.

In order to avoid producing thermal plumes, power plants often

Factories, sewage treatment plants, and oil wells are __________ sources of water pollution.

Eutrophication is a natural process that has been greatly stimulated by human activities.

Algal blooms are a common problem in the Mediterranean sea because of

Feedlots are a major cause of _________ in water.

In the diagram, which of the following organisms would probably be found in the area marked 3 and higher?

The most active decomposition occurs in the area marked _____ on the horizontal axis of the diagram.

The Cyahoga river is notable because

Sediments in rivers are especially harmful to Louisiana's coastal wetlands.

Using duckweed in a lagoon as low-tech sewage treatment plants is an example of

About 1.5 million Americans get sick annually from fecal contamination producing large health costs. Preventive measures would cost

Atmospheric deposition of pollutants is an example of point source pollution.

Using Bentonite slurries to stabilize liquids in porous substances is an example of

Coliform bacteria populations are routinely monitored in drinking water supplies, swimming pools, and at beaches because these bacteria

When natural waters are overloaded with plant nutrients such as nitrate and phosphate ions, they become

Open sea bilge pumping and tank cleaning are legal ways to clean ships, once the ship is at least 300 miles offshore.

Atmospheric deposition of contaminants is an excellent example of

The central goal of the U.S. Clean Water Act was to