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Exam 18: Environmental Issues

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Question 21

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The upper atmosphere layer is called the

A) stratosphere.
B) biosphere.
C) troposphere.
D) ozone layer.

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Question 22

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The introduction of nonnative species into lakes disrupts the balance of the ecosystem but usually does not affect native species.

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Question 23

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Which of the following statements is NOT true regarding wetland areas?

What flame retardant chemical used in plastic and foam products accumulates in human tissue and may cause chromosome abnormalities?

The United States gets ________ of its commercial energy from nonrenewable sources.

The success of family planning programs in developing nations has been mixed.

The presence of one or more chemicals in the atmosphere that are of sufficient quality and quantity to cause harm to all forms of life and materials is referred to as ________ pollution.

Forests have been replanted after an area has been cleared for human activities or devastated by natural disasters are called ________ forests.

One of the hazardous components of air pollution is ________, particles or droplets of dust, soot, oil, metals, or other compounds suspended in the air.

The Air Quality Index measures air pollutants in communities on a 0 to 100 scale.

Which type of smog is a major problem in many cities in developed countries during the summer?

Which of the following statements is NOT true about waste management in the United States?

Any discarded solid or liquid material that meets one or more of the following four criteria is referred to as ________ waste: 1) contains a toxic, carcinogenic, or mutagenic compound at levels that exceed EPA safety standards; 2) catches fire easily; 3) is reactive or unstable enough to explode or release toxic fumes; and 4) corrodes metal containers.

Ozone in the upper atmosphere prevents 95 percent of the sun's UV rays from reaching the earth's surface.

Scientists estimate that only 0.014 percent of the earth's water is readily available for human use.

The removal of trees from a forested area without adequate replanting, threatening the habitat of many living species, is called ________.

The average home in the United States generates about ________ pounds of hazardous waste annually.

Public exposure to medical waste is very rare in the United States.

Ozone in the upper atmosphere provides a protective layer that shields us from the sun's harmful ________ radiation waves.(Please provide the full term.)

The ________ of 1990 established national emission standards for more than 188 different air pollutants.