AnswersSNHS NV-Environmental ScienceLife and Earth's Crust

Life and Earth's Crust — Unit test Answers

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21
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Developed countries typically have _______.

A
a larger rural population
B
a larger urban population
C
less access to goods and services
D
little access to industrial jobs
22
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The layers of the Earth are described by their composition but not their mechanical properties.

A
T
B
F
23

Earth’s crust sits on top of the mantle.

A
T
B
F
24

Which of the following best explains the importance of Earth’s crust to living organisms?

A
The continental crust allowed the evolution of life on land.
B
The crust provides raw materials necessary for life.
C
The crust allowed the formation of fossil fuels.
D
The rock cycle recycles sedimentary rocks formed from animal shells.
25

Which of the following best explains why clear-cutting forests is more destructive than selectively cutting down trees in forests?

A
Clear-cutting eliminates all trees leaving none behind to maintain soil fertility or house native animals.
B
Clear-cutting places the land at greater risk for wildfires.
C
Clear-cutting makes land more attractive for human development.
D
Clear-cutting causes less soil erosion than selective cutting.

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