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Currently,there isn't enough food produced to feed the world's entire population.

A) True
B) False

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What is the process by which organic substances are broken down naturally by living organisms?


A) biodegradation
B) recycling
C) septic systemization
D) organic oxygenation

E) C) and D)
F) A) and B)

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Biomagnification occurs when larger animals eat smaller animals.

A) True
B) False

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All of the following are simple steps for protecting the water supply,except


A) taking showers instead of baths.
B) watering lawns and garden plants in mid-afternoon.
C) fixing leaky faucets.
D) not pouring old medicines down the drain.

E) None of the above
F) A) and B)

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The key pollutant in smog is nitrogen dioxide.

A) True
B) False

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Water is usually disinfected by using


A) fluoride.
B) chlorine.
C) filtration.
D) screening.

E) B) and C)
F) B) and D)

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What is the core reason for many of today's environmental problems?


A) air pollution
B) water pollution
C) dependence on nuclear power
D) rapid population growth

E) None of the above
F) A) and C)

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List and describe five ways Samantha can prevent chemical pollution.Give an example that supports each of these recommendations.

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1. Properly dispose of chemicals: Samant...

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CFLs use 75% less energy than traditional light bulbs.

A) True
B) False

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Radon is a radioactive gas found in certain soils,rocks,and natural building materials.

A) True
B) False

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Biodegradation is the natural process by which organic substances are broken down and disappear back into the environment.

A) True
B) False

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Which of the following is not considered a recommendation for reducing chemical pollution?


A) using nontoxic,nonpetrochemical personal and household products
B) disposing of household hazardous wastes properly
C) storing toxic household products out of the reach of children and pets
D) buying meat,poultry,and produce grown outside your local area

E) A) and C)
F) A) and B)

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Levels of atmospheric greenhouse gases are rising because of


A) combustion of fossil fuels.
B) water pollution.
C) acid rain.
D) the destruction of the ozone layer.

E) All of the above
F) C) and D)

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The United States has a relatively small percentage of the world's population but uses one-fourth of the world's energy.

A) True
B) False

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The pesticide DDT contributed to the control of


A) insect-borne disease in tropical countries.
B) Rocky Mountain spotted fever.
C) smallpox.
D) diphtheria.

E) A) and C)
F) A) and D)

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Key sources of chlorofluorocarbons are solvents,refrigerants,and propellants.

A) True
B) False

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Biological pollutants are often found in bathrooms,damp basements,and humidifiers.

A) True
B) False

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World population is increasing at the approximate rate of 75 million people per


A) week.
B) month.
C) year.
D) decade.

E) B) and C)
F) B) and D)

Correct Answer

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Heavy-metal contamination of sludge


A) can best be eliminated through burning.
B) is hazardous to health.
C) enhances its use as a fertilizer.
D) cannot be absorbed by water.

E) C) and D)
F) B) and D)

Correct Answer

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Choose and define either global warming or thinning of the atmospheric ozone layer.Describe the underlying causes of the problem,potential health effects,and key prevention strategies.Include at least three practical steps for prevention that individuals can take.

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Global warming is the long-term increase...

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