Answer:
I think the answer should be 51
I would Say C. Water I’m not sure but that’s my best guess
Answer:
The forces which originate from within the earth's crust or inside the earth are called internal or endogenetic forces. The sources providing them energy are the internal heat, chemical reactions taking place within the earth, and the transfer of rock materials on the earth's surface by external forces.
Explanation:
It protects us from harmful UV rays from the sun.
