An object travels to the east for 36.4m and then heads north for 21.0 meters, how far is the object from where it began?

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.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.