Willl give a brainlest both active solar heating systems and passive solar heating systems must face south use pumps and fans only work during the daytime reduce the need to use fossil fuels

Reduce the need to use fossil fuels.

i believe your answer would be c.. : )

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.