What is the maximum amount of time perishable foods can safely be held in the danger zone?

The maximum amount of time that the perishable food can be safely held in danger zones is two hours. More than two hours could cause the food to be contaminated or spoiled, which is not safe for an individual to cook or consume for it could cause food poisoning.

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.

your spelling is a little off : ]