The main reason cells are replaced in the body is to remove the dead remains of other cells. For example, let's say you get an infection. The cells are killed, and other cells are called in to replace them. Hope this helps!
Answer:
due to old age or injury
Explanation:
Each cell within the body has its own life cycle during which they become old and damaged. Such cells will be replaced in the body by younger cells that are produced during cell division.
Old or damaged cells are replaced by new cell through the process of mitosis.
Therefore, the main reason cells are replaced in the body is due to old age or death/damage of cells.
