AnswersRMA FL-2001310-EarthSpace Science Semester 1Spheres of Earth

Cycles of Matter Answers

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1
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How do consumers obtain the carbon that they need for their life processes?

A
They breathe it in from the surrounding air.
B
They break down the plants and animals they eat.
C
They absorb it from the surrounding soil.
D
They absorb it from water through their pores.
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Which best defines nitrogen fixation?

A
the process of creating free nitrogen for plants to absorb
B
the breakdown of nitrogen in the soil
C
the conversion of nitrogen gas into a usable form
D
the destruction of the bonds between nitrogen and other elements

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