Which two distinct microbial processes are
responsible for the release of fixed nitrogen as
dinitrogen gas (N2) to the atmosphere?
(a) Aerobic nitrate oxidation and nitrite reduction
(b) Decomposition of organic nitrogen and
conversion of dinitrogen to ammonium
compounds
(c) Enteric fermentation in cattle and nitrogen
fixation by Rhizobium in root nodules of
legumes
(d) Anaerobic ammonium oxidation and
denitrification
responsible for the release of fixed nitrogen as
dinitrogen gas (N2) to the atmosphere?
(a) Aerobic nitrate oxidation and nitrite reduction
(b) Decomposition of organic nitrogen and
conversion of dinitrogen to ammonium
compounds
(c) Enteric fermentation in cattle and nitrogen
fixation by Rhizobium in root nodules of
legumes
(d) Anaerobic ammonium oxidation and
denitrification