I know that each fruit fly has eight diploid chromosomes. I also know that they have for homologous pairs of chromosomes.

I don’t understand how this chart is supposed to be completed

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

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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.