Definition: This is a chemical process that breaks the bonds holding the rocks together, causing them to fall apart and form smaller pieces. It is much more common in locations where there is a lot of water and
warmer temperatures.
I kinda need the definition please help me

There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell