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Nitrogen Cycle

Nitrogen Cycle. Submitted by : Madelle Mae Edera I Lavoisier. NITROGEN is important in building proteins needed by the plants and animals. This nutrient also flows in the environment. The waste materials decomposed by bacteria forms part of the nitrogen cycle.

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Nitrogen Cycle

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  1. Nitrogen Cycle Submitted by : Madelle Mae Edera I Lavoisier

  2. NITROGENis important in building proteins needed by the plants and animals. This nutrient also flows in the environment. The waste materials decomposed by bacteria forms part of the nitrogen cycle.

  3. The bacteria in the soil act on the decomposing bodies of plants and animals to form nitrites in the soil. Other soil bacteria obtain energy by converting nitrites( another form of nitrogen) to nitrates.NITRATESare Products of decomposition needed and used by the plants.

  4. NITRATESare used by plants to form amino acids that are processed into proteins. They are important for the growth of plant and animal cells. They are the substances used to build plants rich in protein that are eaten by humans and plants.

  5. Soil Nitrates are increased by: • Lightning • Action of certain fungi, algae and bacteria

  6. The bacteria RHIZOBIUMwhich live in the roots of leguminous plants, such as mung and string beans, absorb the nitrogen in the air and turn it into nitrates.

  7. LIGHTNINGturns nitrogen in air into nitric acid which sinks into the soil with rain.

  8. Plants absorb nitrogen from the soil. Nitrogen must first be converted to AMMONIUM IONS. Certain bacteria decompose dead plants and animals. The decomposition forms compound called AMMONIA and NITRATE in the soil. The nitrogen cycle illustrates this. NITROGEN- FIXATION is a process that occurs when nitrogen-fixing bacteria convert nitrogen in the atmosphere into ammonia. The soil’s supply of ammonia is further increased by decomposing organic materials or humus.

  9. Nitrogen Cycle Free nitrogen in air Free nitrogen Lightning BACTERIA Decomposing bacteria Legumes Nitrates in soil

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