What advantage rule can we state about class-2 lever

Cell division is important to single celled organisms because it allows the cells to reproduce. through cell division, cells make exact copies of themselves. when single celled organisms go through cell division, they make exact copies of themselves which is how they reproduce.

Your answer is water because there is combined mass of water found on, under, and over the surface of a planet. your answer is water.

Even heating of the earth at all places