Chemoautotrophic Bacteria Called _______ Carry Out a Two-Step Process

Chemoautotrophic bacteria called _______ carry out a two-step process.Two genera, Nitrosomonas and Nitrosococcus, convert _______, and then Nitrobacter converts _______, which is most usable by plants.

A) nitrogen fixers; ammonia (NH₃) to nitrite ions (NO₂^-) ; nitrite to nitrate (NO₃^-)
B) denitrifiers; ammonia (NH₃) to nitrite ions (NO₂^-) ; nitrite to nitrate (NO₃^-)
C) denitrifiers; nitrite to nitrate (NO₃^-) ; ammonia (NH₃) to nitrite ions (NO₂^-)
D) nitrifiers; nitrite to nitrate (NO₃^-) ; ammonia (NH₃) to nitrite ions (NO₂^-)
E) nitrifiers; ammonia (NH₃) to nitrite ions (NO₂^-) ; nitrite to nitrate (NO₃^-)

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