Complete the following cycle given by filling the blanks (a), (b), (c) (d)
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a - lightning
b - Rhizobium
c - Decay bacteria that act on plants and animals wastes
d - Denitrifying bacteria
Explanation :
Heat of lightning cause some chemical reaction between oxygen and nitrogen.
Nitrogen fixing bacteria present in soil called Rhizobium etc...
Decaying bacteria converts complex organic substances to ammonia is called nitrification and then into nitrates.
Nitrates converted into nitrogen gas by denitrifying bacteria for balance of nitrogen in atmosphere.
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