D. sum of all chemical reactions in an organism
Answer:
Nitrification.
Explanation:
It is a part of the Nitrogen Cycle. The bacterias can convert ammonia into nitrite and nitrate, these compounds are fundamentally important for all life. They are used for the creation of proteins and amino acids.
I hope this answer helps you.
Answer:
3
Explanation:
Atoll reefs are generally located in lagoons
