The answer is number 4 hope this helps
Classification hope this helped
<span>The nucleus is located at the center of an atom. It's very dense - almost all of the mass of an atom is located in the nucleus - and is made up of protons and neutrons. </span>
I believe the left chamber has a higher concentration of neon gas because it has more neon atoms in it, and the right chamber has a higher concentration of helium gas because it has more helium atoms in it.
Answer:
The answer is A.
Explanation:
It can be regulated with negative feedback loops.
