Answer:
2 elements.
Explanation:
N is your Nitrogen and H is your Hydrogen. Elements are just one specific kind of atom. You have two elements with names Nitrogen and Hydrogen. Therefore, you have two elements.
Answer:
There is a lot of biodiversity in this seafloor.
Explanation:
Biodiversity is just the diversity in species and animals in a certain environment.
It is 2, I hope this helped