Answer:
Messenger Rna!! Hope this helps <3
Answer:
B. Interneurons
Explanation:
The basic unit of the central nervous system is the neuron or the nerve cells. Billions of neurons allow the different parts of the body to communicate with each other via the brain and the spinal cord. A fatty material called myelin coats nerve cells to insulate them and to allow nerves to communicate quickly.
I think the answer is C. Hydrogen *not completely sure tho
Answer: A. Uses the law of superposition to determine which rock is older or younger
Hope this helps!