Actually, it is INNATE IMMUNITY. That is the proven right answer so be careful.
Your immune system is the system in your body that defends your body from any organism that threatens the desruction of your cells. Hope it helps
You would avoid the following:
-An Advertisement
-A TV Show
-A Magazine
Well for one the impact of age of course, is not limited to organisms. overtime your DNA accumulates damage.
It's has an important role in the survival and adaptability of a species. When a species habitat changes, the population needs to be able to adapt to survive: the ability of the population to adapt to the changing environment will determine their ability to cope with an environment challenge.