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SlideshowReport

The nitrogen cycle "دورة النيتروجين"

Description
Nitrogen is 78% of our atmosphere but N2 gas is inert (not a usable form)
Nitrogen fixation = Nitrogen gas is fixed (made into ammonia) by nitrogen-fixing bacteria. For example, Usable form (ammonium ions)

Nitrification = bacteria that convert ammonium ions first into nitrite ions then into nitrate ions. Plants can take up these ions
Animals obtain nitrogen by eating plants or other animals

Denitrifying bacteria = convert nitrates in soil or water to gaseous nitrogen, releasing it back into the atmosphere
Haber-Bosch process = synthetic production of fertilizers by combining nitrogen and hydrogen to synthesize ammonia
Humans are fixing as much nitrogen as nature does
BOD = biochemical oxygen demand
Reduces dissolved oxygen in water. Lead to hypoxia and Impacts organisms
Haber-Bosch process = synthetic production of fertilizers by combining nitrogen and hydrogen to synthesize ammonia
Humans are fixing as much nitrogen as nature does
BOD = biochemical oxygen demand
Reduces dissolved oxygen in water. Lead to hypoxia and Impacts organisms

Haber-Bosch process = synthetic production of fertilizers by combining nitrogen and hydrogen to synthesize ammonia
Humans are fixing as much nitrogen as nature does
BOD = biochemical oxygen demand
Reduces dissolved oxygen in water. Lead to hypoxia and Impacts organisms
Haber-Bosch process = synthetic production of fertilizers by combining nitrogen and hydrogen to synthesize ammonia
Humans are fixing as much nitrogen as nature does
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