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The Nitrogen Cycle: From Nitrogen to Nitrates

Explore the essential role of nitrogen in the environment and how it is converted into useful compounds through bacteria, decomposers, and legumes. Discover the common compounds of nitrogen and the significance of their conversion in the nitrogen cycle.

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The Nitrogen Cycle: From Nitrogen to Nitrates

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  1. Notes: The Nitrogen Cycle

  2. (1) Nitrogen • Type of element or atom • All living things made with Nitrogen compounds! • Common Compounds: • Nitrate (NO3) • Nitrite (NO2) • Ammonia (NH3) • Urea (NH2)2CO • Ammonium Nitrate (NH4NO3)

  3. (2) Nitrogen & Bacteria • ~80% of the air is Nitrogen Gas (N2) • Most organisms cannot do anything with N2 • Most organisms use nitrates • Bacterial Conversion: • Bacteria in soil convert N2 Nitrates • Bacteria in soil convert Ammonium  Nitrites  Nitrates

  4. (3) Nitrogen & Decomposers • Decomposers: • Break down dead remains of plants + animals • Produce Ammonium • Production of Ammonium allows other organisms (bacteria) to produce useful Nitrates!

  5. (4) Nitrogen & Legumes • Legumes: Fruit in a Pod • Peas, Beans, Lentils, Peanuts • Have symbiotic relationship w/bacteria • Able to convert N2 gas  Ammonium

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