Which of the following does a weather station model demonstrate? a) latitude b) gravity c)air pressure d) air mass

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 - the respond is innate and varies over time.

good luck!