AnswersHS Earth and Space Science Sem. 1Lab: Effects of Human Activity on Freshwater Resources

Lab: Effects of Human Activity on Freshwater Resources — Unit test Answers

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21
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What farming method is used in dry or desert areas?

A
chinampas
B
drip irrigation
C
wind-powered pumps
D
aqueducts
22
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Which of the following pollutants is most commonly associated with poor air quality?

A
Carbon monoxide
B
Oxygen
C
Nitrogen
D
Water Vapor
23

What do manufacturers use water for?

A
to transport people
B
to irrigate farms
C
to put out fires
D
to produce wood and paper products
24

How much of the protein consumed by humans around the world is fish?

A
5 percent
B
20 percent
C
40 percent
D
50 percent
25

How has the EPA improved air quality over the last 30 years?

A
by monitoring pollutants and passing regulations to reduce air pollution
B
by decreasing soil erosion and dust storms
C
by building marine refuges to help protect marine life and reduce air pollution
D
by decreasing of fossil fuel use in motor vehicles and industry

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Lab: Effects of Human Activity on Freshwater Resources