Biogeochemical Cycles in Ecosystems-Standard Bio 1.3 Answers

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1
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Which statements describe characteristics of Earth's geosphere? Select three options.It is made up of living things.It is mostly solid.It includes liquid water.It includes Earth's surface.It includes Earth's interior.It is made up of gases and airborne particles.

A
It is made up of living things.
B
It is mostly solid.
C
It includes liquid water.
D
It includes Earth's surface.
E
It includes Earth's interior.
F
It is made up of gases and airborne particles.
2
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Which two processes allow water to enter the atmosphere?

A
evaporation and transpiration
B
precipitation and condensation
C
condensation and evaporation
D
transpiration and precipitation
3

Which statements describe the importance of the nitrogen cycle to living things? Select two options.It provides a source of water.It helps cells make proteins.It provides a form of usable nitrogen.It removes carbon dioxide from the atmosphere.It destroys harmful bacteria.It helps cells make glucose.

A
It provides a source of water.
B
It helps cells make proteins.
C
It provides a form of usable nitrogen.
D
It removes carbon dioxide from the atmosphere.
E
It destroys harmful bacteria.
F
It helps cells make glucose.
4

Why are plants important to the carbon cycle?

A
Plants remove carbon from the soil to help them convert nitrogen to a usable form.
B
Plants remove carbon from the atmosphere to help them convert nitrogen to a usable form.
C
Plants remove carbon from the soil to help them make glucose.
D
Plants remove carbon from the atmosphere to help them make glucose.
5

Why are bacteria needed in the nitrogen cycle?

A
Other living things cannot use atmospheric nitrogen.
B
Other living things cannot use the nitrogen in plants.
C
Bacteria are the main nitrogen reservoir.
D
Bacteria convert nitrogen gas into oxygen.
7

Which statement describes a negative consequence of humans’ use of excess water?

A
It allows food to be produced in dry areas.
B
It increases runoff, which carries fertilizers.
C
It enables food to be produced in drought years.
D
It results to water not being recycled.
8

What protects Earth's surface?

A
the atmosphere
B
the hydrosphere
C
the geosphere
D
the biosphere
9

Which is the sphere that refers to the Earth’s water?

A
the geosphere
B
the atmosphere
C
the hydrosphere
D
the biosphere
10

How do animals get nitrogen?

A
They break down glucose molecules into nitrogen.
B
They convert carbon to nitrogen during fixation.
C
They eat it in plants and other animals.
D
They breathe it in from the atmosphere.

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Biogeochemical Cycles in Ecosystems-Standard Bio…