<span>the interference of two waves of equal frequency and opposite phase, resulting in their cancellation where the negative displacement of one always coincides with the positive displacement of the other.</span>
It is not it something like sand because it would keep the fossil preserved.
Answer:
I think it might be red an white blood cells
Explanation:
red an white blood cells play a important role in transporting the proteins, minerals an oxygen all over the body through the blood vessels this is connected to the heart.
Answer:
A. the energy required to maintain vital body functions.
