d. natural gas is the answer
Since the formula for the circumference of a circle is pi x d or pi x 2r. The radius is a straight line from the center of the circle to the outer part of it, which is exactly what the spokes are to the wheel. So we take the length of the spoke, which is the radius, and use it in our equation. pi times 2 times the length of the spoke will give us our answer.
Answer:
Nitrogen is N, neon is Ne
The red at the bottom is just the holder for the beaker. It’s not apart of the density.
Answer:
a
Explanation:
The type of specialized cell whose main function is to communicate between neurons is a(n) interneuron