GEO 131 Fresh Water Quantity and Quality

Nitrogen makes up 78% of the atmosphere.

Biota (organisms in an area) cannot use atmospheric nitrogen to make amino acids and other compounds, so they depend on nitrogen fixing bacteria to convert nitrogen into nitrate.

Nitrogen is absorbed by the plant, and then transmitted into the environment by plant and animal respiration and consumption. Or decomposition can also add it into the soil.

Nitrogen fixing bacteria converts it to ammonia (ammonification)i.e lichens and algae

Nitrifying bacteria bonds oxygen to ammonia (nitrification)

Now it’s Nitrites/Nitrates and this is essential for plants.

Cycle repeats.
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