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Why can exotic species be damaging to ecosystems?

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Exotic species do not have the...

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Eutrophication is an artificial process that does not occur in lakes unless there is a strong human influence.

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Which of the following would NOT be an example of how people have disrupted wildlife habitats?


A) using a tidal marsh as a landfill
B) erecting fences to protect cattle
C) killing elephants for their ivory tusks
D) burning a forest to plant crops

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Which of the following is NOT an exotic species that has caused unforeseen ecological disruption where it has been introduced,whether accidentally or deliberately?


A) zebra mussels
B) Asian gypsy moth
C) rabbits
D) all of the above have caused ecological disruption

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What is the environmental significance of Yucca Mountain?

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Yucca Mountain, located in the U.S. stat...

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The biosphere is composed of


A) the troposphere,hydrosphere,and the upper portions of the earth's upper crust.
B) the stratosphere,the living organic world,and the absorbable minerals of the earth's crust.
C) water,phosphorus,and carbon.
D) solar energy,the earth's crust,and living organisms.

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Which of the following is not part of the biosphere?


A) troposphere
B) earth's crust
C) hydrosphere
D) earth's inner core

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All of the following statements about decomposers are true EXCEPT that they


A) feed on the remains of other organisms.
B) break down radioactive wastes.
C) release nutrients for reuse in the food chain.
D) play an essential part in the cycle of life.

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Which of the following is NOT a primary source of air pollutants?


A) ammonia
B) carbon dioxides
C) hydrocarbons
D) nitrogen oxides

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Because of world urbanization,agriculture is no longer the main consumer of water.

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What has happened to the Aral Sea in the last 50 years?

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The Aral Sea has experienced a significa...

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Which of the following is NOT an effective means of reducing the impact of solid waste on the environment?


A) reducing the volume of waste that is generated
B) recycling household solid waste
C) reusing materials rather than discarding them
D) all of the above are effective means of reducing the environmental impact of solid wastes

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All of the following statements about pesticides are true EXCEPT


A) long term effects of their usage is not known.
B) they are most effective on resistant,as opposed to high-yielding,varieties of plants.
C) very few of their ingredients have been reviewed for safety by the EPA.
D) they can leach into aquifers long after the chemicals are no longer used.

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What are the agricultural sources of water pollution?

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Agricultural sources of water pollution ...

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What factors are missing from the IPAT equation that might help explain a culture group's level of environmental impact?

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Answers will vary.Examples mig...

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What atmospheric condition,associated with smog,occurs when air at lower altitudes is colder than air aloft?

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Temperatur...

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Explain how agriculture can have a negative effect on water quality.

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Agricultural runoff ...

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The agreement that calls for global efforts to reduce emissions of carbon dioxide and other heat-trapping gases is known as the


A) 1979 Convention on Transboundary Air Pollution.
B) Montreal Protocol of 1987.
C) Clean Air Act of 1990.
D) Kyoto Protocol of 1997.

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A temperature inversion


A) occurs when air temperature decreases with height above the earth's surface.
B) typically lasts for several weeks.
C) decreases the effects of air pollution through dilution.
D) can trap air pollutants near the surface,causing serious human health effects.

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Of the landforms produced by excavation,which has probably had the greatest environmental impact?


A) canals
B) surface mining
C) underground mining
D) chalk pits

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