N ITROGEN C YCLE. N ITROGEN IS IN THE AIR. H OW DOES IT GET TO OTHER PLACES ? Lightning can fix nitrogen into the soil Bacteria can fix nitrogen into.

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Presentation transcript:

N ITROGEN C YCLE

N ITROGEN IS IN THE AIR. H OW DOES IT GET TO OTHER PLACES ? Lightning can fix nitrogen into the soil Bacteria can fix nitrogen into the soil Decomposers can fix nitrogen into the soil The roots of some bean plants can fix nitrogen into the soil Nitrogen can get into clouds and fall as nitric acid in the rain

N ITROGEN IS IN THE SOIL. H OW DOES IT GET TO OTHER PLACES ? Plants can absorb the nitrogen through their roots Bacteria can convert the nitrogen back into a gas in the air Nitrogen can be dissolved into the water

W HERE ELSE CAN NITROGEN GO ? If animals eat plants, they get nitrogen from them When plants and animals die or eliminate waste, they decompose and release nitrogen into the soil, air, or water Fertilizer has nitrogen in it which it puts into the soil and plants Fires can release nitrogen from plants and animals