Answer:
A. keeps you healthy
Explanation:
The immune system protects your body from outside "invaders," such as bacteria, viruses, fungi, and toxins.
Intake and eject
I hope it is correct
Answer: the rocks density and the waters density would stay the same. It does not change
Explanation:
In the mitochondria, the powerhouse of the cell.
Жила была царевна но туда ей бросил лёд
