Cycles of Matter Answers

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Which best defines nitrogen fixation?

the process of creating free nitrogen for plants to absorb

the breakdown of nitrogen in the soil

the conversion of nitrogen gas into a usable form

the destruction of the bonds between nitrogen and other elements

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

They breathe it in from the surrounding air.

They break down the plants and animals they eat.

They absorb it from the surrounding soil.

They absorb it from water through their pores.

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