Cell organelles that are responsible for digesting food, worn out organelles and other cellular wastes are called?

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.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.