AnswersFL-2001340-Environmental Science BHuman Impact on the Environment

Human Impact on the Environment — Unit test Answers

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Which statement describes clean air as a natural resource?

A
Clean air can always be found indoors.
B
Clean air provides nitrogen gas for plant respiration.
C
Clean air is produced when high levels of ultrafine particles circulate.
D
Clean air reduces the risk of illnesses and other health problems.
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Rainforests around the world are being cleared at an alarming rate to make room for new communities, agriculture, mining, and roads, and to provide lumber for construction and furniture. How might the destruction of rainforests affect the balance of gases in Earth's atmosphere?

A
by increasing carbon dioxide and decreasing oxygen
B
by increasing carbon dioxide and increasing oxygen
C
by decreasing carbon dioxide and increasing oxygen
D
by decreasing carbon dioxideand decreasing oxygen
23

Which resource is a nonrenewable resource?

A
fresh water
B
maple trees
C
solar energy
D
precious metal
24

Which of the following types of sites does the National Park Service manage?

A
memorials
B
wildlife refuges
C
ecosystems
D
endangered species
25

Which of the following pollutants is most commonly associated with poor air quality?

A
Carbon monoxide
B
Oxygen
C
Nitrogen
D
Water Vapor

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