4. nitrogen gas is more abundant in our atmosphere than
oxyganl however, nitrogen needs to be converted into
different forms to be used by many organlams. bacteria ara
highly involved in thisl describe the role of (a) bacteris
fixing nitrogen as they liva symblotically with some plant
species, (b) nitrifying bacteria, and (c) denitrifying bacteria
in the nitrogen cycle."

c. would be the answer : )

explanation:

sex cells are usually half's then they find another half and make a fertilize egg

answer;

-phase iii

explanation;

phase three begins with the transition of a recovered individual to a phase three team of the appropriate service. this phase usually takes place at a military medical facility in the united states. one of the goals of phase three is family reunification.