The actual answer is, "A", an ocean trench.
You can find out more about them by researching them up on Google, it's only a few phrases and a hit on the enter key :P
The peripheral nervous system is made up of two systems; the somatic nervous system controls muscle movement and the autonomic nervous system connects with internal organs.
Answer:
15
Explanation:
the atomic number is the number above the symbol. the number below is the atomic mass.
Explanation:
It's little bit short but it will help you and you can get full mark hope it will help you! Have a nice day. ^_^
A, because it the constant variable