Which of the following statements is correct? A) Achaea are part of the same domain as bacteria in the classification of life.
B) Archaea are made up of eukaryotic cells.
C) Archaea are older organisms than eukaryotes.
D) Archaea are typically multicellular organisms.

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.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

oxygen +1 most likely

idk im sorry.