Exam 18: Water Pollution

Explain the connections between oxygen sag and biological oxygen demand (BOD).Use a drawing in your explanation and use appropriate labels.

The cheapest and most effective way to reduce water pollution is to use technology to separate wastes for nonpoint sources.

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

Best available economically achievable technology (BAT) standards are standards set for

In 1998, a change in the approach to water quality was initiated by _________ with an emphasis on _________.

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

Toxic metals such as lead, cadmium, and mercury

Aquifers are especially susceptible to contamination

The first estuary in the United States to be targeted for protection and restoration was Chesapeake Bay.

An oxygen sag occurs most often

High oxygen content in water is an indication that

Atmospheric deposition of contaminants is an excellent example of

Compare and contrast the cleanup and control of nonpoint and point sources of water pollution.

-In the diagram, the horizontal (X) axis should be labeled

Primary sewage treatment involves

The main reason that surface water pollution has largely decreased in the United States since 1950 is

-In the diagram, which of the following organisms would probably be found in the area between 1 and 2?

In order to avoid producing thermal plumes, power plants often

Tertiary sewage treatment is designed to remove

Which of the following are inorganic toxic substances sometimes found in local water supplies?