Need an answer, please need an answer, please.
answer the 4 guide question
no copy

1. pulmonary circulation is whereby deoxygenated blood from body tissue is pumped from the heart to the lungs through the pulmonary artery and oxygenated blood back to the heart thru pulmonary vein.

systematic circulation is whereby deoxygenate blood from the body tissues return to the heart via the venacava .

the answer is

c. parental

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.