Nitrogen Cycle

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What is the nitrogen cycle?

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The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including atmospheric nitrogen, ammonia, nitrates, and proteins, through biological and physical processes.

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NGSS.MS-ESS2-1

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Where does sedimentation occur?

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At the bottom of a body of water.

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What do plants use nitrogen for?

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Plants use nitrogen to make proteins.

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What is the role of denitrifying bacteria?

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Denitrifying bacteria convert nitrates back into atmospheric nitrogen.

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How do animals obtain nitrogen?

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Animals get nitrogen from the food they eat.

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What is nitrogen fixation?

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Nitrogen fixation is the process of converting atmospheric nitrogen into ammonia or related compounds in soil, primarily by bacteria.

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NGSS.MS-LS2-1

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What is nitrification?

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Nitrification is the process by which ammonia is converted into nitrates by bacteria in the soil.

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NGSS.MS-LS2-1

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What is assimilation in the nitrogen cycle?

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Assimilation is the process by which plants and animals incorporate nitrogen from the soil or food into their own biological tissues.

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NGSS.MS-LS2-3

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What is ammonification?

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Ammonification is the process of converting organic nitrogen from dead organisms and waste into ammonia.

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NGSS.MS-LS2-3

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What is the importance of the nitrogen cycle?

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The nitrogen cycle is essential for maintaining ecosystem health, as nitrogen is a critical nutrient for plant growth and is necessary for the production of proteins.

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NGSS.MS-LS2-1

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