The answer is B... im just making a guess so...
The nitrogen cycle could no exist without bactria. bacteria that lived inside the ground, catch the nitrogen that has been fixed and covert it into nitrate.
I believe the answer is true. Hope this helps !!
They have scales instead of skin or fur, as well as some being able to swim in water and walk on land. Many are poisonous and have several different tactics for catching prey from insects to small creatures like birds or mice. The Komodo dragon is a large reptile that has poisonous saliva which it uses to stun its prey.
