When the number of predators increases, they will eat more of the prey and cause a decrease in the population of the prey. Which will also cause a decrease in the population of the predators. And the lack of predators will then cause the prey to increase and the cycle continues.
Mitosis is a process in which a cell produces an exact copy of itself. The 2 daughter cells produced from mitosis have the same number of chromatids as the parent cell.