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A is the reduction of nitrates into gase...

__A__ is the reduction of nitrates into gaseous nitrogen by the action of __B__

A

A - Nitrification, B - Pseudomonas

B

A - Ammonification, B - Nitrocystis

C

A - Denitrification, B - Thiobacillus

D

B - Nitrosomonas

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AAKASH INSTITUTE ENGLISH-TEST 6-EXAMPLE
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