NITROGEN CYCLE
Go Green With Knowledge!
Nature's Nativestm Roll Call
Nitrogen changes so it can be used by plants.

Nitrogen          Ammonia


Ammonia         Nitrite


Nitrite               Nitrate

Plants can
take in nitrate.
There is a lot of nitrogen
in the air. 
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Plants need nitrogen but it can't get in from the air.
Nitrogen has to get down into the soil so plants can get it.
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Bacteria to the rescue!
Bacteria change nitrogen into ammonia.
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But, plants don't take in ammonia.
Bacteria change ammonia into nitrite.
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But, plants don't take in nitrite.
Bacteria change nitrite into nitrate.
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Plants can take in nitrate!
SOMETIMES NITRATE IS NOT USED BY PLANTS.
THEN THE PROCESS IS REVERSED.
NITROGEN GOES BACK INTO THE AIR.
Nitrate is changed into nitrite.
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Nitrite is changed
into ammonia.
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Ammonia is changed
into nitrogen.
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Nitrogen goes into the air.
Nitrogen is a source of nourishment from food. Nitrogen moves in the nitrogen cycle.

Scroll down to see Nature's NativesTM show the nitrogen cycle.
GO GREEN WITH KNOWLEDGE!TM
Nature's Natives™ is a simplified representation of how nature works.
Copyright ©2010 Lynne Hudgins ALL RIGHTS RESERVED
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Put your curser on the blue dot. Read the caption below the picture. Use your mouse to roll over the pictures.
Put your curser on the blue dot. Read the caption below the picture. Use your mouse to roll over the pictures.
The nutrient cycle is a supply for:
Climate, Nutrition, Water,  Peace of Mind,