The comammox bacteria play a role in nitrification and therefore in the nitrogen cycle. other microbes, with distinct ecological niches, also participate in the nitrogen cycle. the metabolic reactions involving nitrogen that bacteria perform include: nitrogen fixation (n2 → nh3), nitrification (nh3 → no3 - or no2 and denitrification (no3 - or no2 - → no, n2o, and n2), all of which make up the nitrogen cycle. each of these reactions is carried out by a unique set of microorganisms with a distinct ecological niche. drag the appropriate items to their respective bins.

a. microbes that oxidize inorganic nitrogen compounds

b. obligate anaerobes

c. chemoorganotrophs

d. chemolithotrophs

e. obligate aerobes

f. facultative aerobes

bin 1. nitrogen fixation

bin 2. nitrification

bin 3. denitrification

BIN 1.

Facultative anaerobes  

Obligate anaerobes (most obligate, because nitrogenase enzyme  can be inhibited by oxygen which stops nitrogen cycle.)

Chemolithotrops, because they obtained energy from oxidation bonds in inorganic compounds bond.

BIN 2

Obligate anaerobes.

Microbes that oxidize inorganic compounds

Obligate aerobes.

Chemolithotrophs.

BIN 3.

Chemoorganotrophs, since energy obtained from oxidation of chemical bonds in organic compounds

Obligatory anaerobes.

Explanation:

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this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.