Which of the following statements are true?
a. Our stomachs are about as acidic as our blood is basic.
b. Our stomachs are about as basic as our blood is acidic.
c. Our stomachs are far more acidic than our blood is basic
d. Our stomachs are far more basic than our blood is acidic.

C

Explanation:

The acid in our stomach is made up of potassium chloride, sodium chloride, and hydrochloric acid and is really strong so it can eat through the food we eat faster, and our blood is normally slightly basic, with a normal pH range of about 7.35 to 7.45.

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.