Exam 10: Water Resources

A manufacturer finds that his wastewater has twice the regulated concentration of mercury allowed to discharge into the nearby river. The manufacturer finds that simply mixing his wastewater with an equal volume of clean water from the river will enable him attain the regulated concentration of mercury and is far less expensive than removing mercury from the waste stream. This is an example of

The greatest quantity of fresh water is held in

Storm runoff from a city that discharges into a nearby river was found to contain high concentrations of petroleum organics, suspected of originating from automobile traffic. The hydrocarbons accumulate on the surface of the streets and are washed into storm drains during rainstorms. Is this point source pollution or nonpoint source pollution? Explain.

Which of the following is not one of the ways that humans alter the water cycle?

Which of the following statements about the water cycle is true?

Some organic chemicals tend to biomagnifiy because they

What fraction of people in the world has access to safe drinking water?

Among the uses of water listed below, select the one that represents the least amount of water consumed on a daily basis.

Which of the following statements about biomagnification is true?

Ricin is a protein that comes from the castor oil plant. It is toxic to humans and other mammals at low doses. Ricin can be categorized as a

The largest dam or diversion structure in the world is located in

Why is heat considered a pollutant?

When contaminating/polluting substances are discharged directly into a body of water, it is called _______ pollution.

The adult human body is approximately _______% water.