Nature has its own rejuvenative effect
What does this mean???
Answers
Answer:
Aging is near universal most likely because it provides considerable evolutionary advantages: aging species are more likely to survive changes in their environment, despite the fact that aging is a tremendous disadvantage from the perspective of the individual. The world changes, and so we and near all of our ancestors age and suffer. I did say near universal, however. The more primitive the types of organism surveyed, the more likely it is that you will see signs of agelessness: a few species of creature that, given sufficient peace, quiet, and nutrients, can repair themselves indefinitely.
Hydra may fall into this category, for example. When a species doesn't have a brain or any sort of very complex organ and configuration that is essential to the self, then aggressive regeneration is a viable strategy. That apparently stops being the case as complexity increases: there is some point at which evolution selects for a loss of regeneration in favor of ever more complicated structures. As a species we are a long, long way past that point. The most complex species capable of feats of complete regeneration of organs and limbs are small animals such as salamanders and zebrafish, and even they are nowhere near as good at it as the hydra.
Answer:
Nature is tree bird etc.....