Over time, organisms that reproduce only asexually do not have genetic variation. This can cause problems for the organisms because they might not be able to -

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

b. read the phase at the intersection of any given temperature and pressure.