a) ammonium... nitrogen gas
b) nitrates... nitrogen gas
c) nitrogen gas... nitrates
d) nitrogen gas... ammonium
e) nitrogen gas... nitrates
i think it's d,
b) nitrates... nitrogen gas
c) nitrogen gas... nitrates
d) nitrogen gas... ammonium
e) nitrogen gas... nitrates
i think it's d,
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The Answer is B - Denitrifying bacteria cause the production of nitrogen gas N2 from nitrates.