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You are reading an older version of this FlexBook® textbook: CK-12 Earth Science Concepts For Middle School Go to the latest version.

11.17: Nitrogen Cycle in Ecosystems

Difficulty Level: Basic Created by: CK-12
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Vocabulary

dead zone

dead zone

Zone in an ocean or lake where organisms cannot live because there is little or no oxygen.
nitrogen cycle

nitrogen cycle

Movement of nitrogen through the atmosphere, soil, and biosphere.

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Difficulty Level:

Basic

Grades:

6 , 7

Date Created:

Jan 04, 2013

Last Modified:

Jan 30, 2016
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SCI.ESC.816.L.2

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