Arteries and veins are two important parts of the circulatory system. What is the relationship between arteries and veins? A.
They work together to exchange gases.
B.
They work together to transport nutrients.
C.
They work independently to remove wastes.
D.
They work independently to relay messages.

Explanation:

blood moves thru it

carbon

explanation:

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.