Answer:
volcanic eruption
Explanation:
"The environmental change that occurs faster is definitely volcanic eruption. It may happen in an instant and destroy everything in its way, whereas the process of regrowth of forest after volcanic eruption is a slow one."
Because every cell have some life span after this they become older and damage, so cells divide to replace old and damage cells.
Your brain sends it signals telling it what you need
The organism that has all the adaptations listed above is C. polar bear.
