Which type of specialized cell is responsible for sending signals throughout the body? Nerve cells

Epithelial Cells

Muscle Cells

Blood Cells

its multi choice

NERVE CELL

THANKS FOR POINTS

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.

so whats the answer