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Nitrogen Cycle

Nitrogen Cycle

Gaseous nitrogen is converted into forms that can be used by plants during the process of nitrogen fixation. Denitrifying bacteria turn nitrate back into gaseous nitrogen.

CK-12 (Middle School)

ESSENTIAL QUESTION:

How is nitrogen recycled in the biosphere?
STANDARDS:
RST.2 - Main Ideas

DEPTH OF KNOWLEDGE (DOK) LEVELS:

1,2,3
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