Carbon atoms are able to give off electrons to form negative carbon ions
bond with other carbon atoms to form long chains
gain four extra electrons to form positive carbon ions
form five single covalent bonds with their valence electrons

Gain four extra electrons for form positive carbon ions

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.

can you give me more to work here with plzs and you