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Nitrogen Cycle By: Madora M.
Nitrogen starts its cycle in the atmosphere. Animals get it from eating plants with nitric oxide.
Nitrogen comes down to Earth when lightning strikes. Then the nitrogen combines with oxygen and creates nitric oxide. That is the from of nitrogen that plants and animals use.
Once the lightning creates nitric oxide, plants absorb it through the ground. Animals eat the plants and get nitric oxide in their body.
When the plant decomposes, the nitric oxide goes back into the ground.
Some of the nitric oxide stays in the ground, and some of it gets absorbed by new plants.
Plants and animals use the nitric oxide to help their cells create proteins which help build up the cell and make it stronger. Plants and animals also use nitric oxide to create and build up their DNA.
Plants and animals use proteins from nitric oxide to help build up cells. They also use nitric oxide to create and build up their DNA.
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