1) Importance of Nitrogen a) To synthesise protein in plant tissue b) Keeps nature in balance for both recreational purposes and scientific inquiry c) For breathing 2) Function of Rhizobium sp.  a) Convert ammonium ions (NH4+) into nitrite ions (NO2-) b) Fix nitrogen from the atmosphere and changes it to ammonium ion (NH4+) c) To convert nitrate in the soil into nitrogen gas d) Convert nitrite ions (NO2-) to nitrate ions (NO3-) 3) Function of Nitrosomonas sp. a) Convert ammonium ions (NH4+) into nitrite ions (NO2-) b) Fix nitrogen from the atmosphere and changes it to ammonium ion (NH4+) c) To convert nitrate in the soil into nitrogen gas d) Convert nitrite ions (NO2-) to nitrate ions (NO3-) 4) Function of Nitrobacter sp. a) Convert ammonium ions (NH4+) into nitrite ions (NO2-) b) Fix nitrogen from the atmosphere and changes it to ammonium ion (NH4+) c) To convert nitrate in the soil into nitrogen gas d) Convert nitrite ions (NO2-) to nitrate ions (NO3-) 5) Function of lightning in a thunderstorm in nitrogen cycle a) To convert nitrate in the soil into nitrogen gas b) Fix nitrogen from the atmosphere and changes it to ammonium ion (NH4+) c) Oxidises nitrogen to nitrogen dioxide (NO2)

Nitrogen cycle

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