It is interesting to note that humans can migrate if conditions in their country or place of residence change and are no longer favorable to them. They might migrate to other places which have conditions similar to the conditions that used to exist at their homeland before such conditions changed. This would be mimicking nature for some organism do just that when conditions of the environment change. Other organisms might evolve to adapt to the new conditions, similarly humans may adapt to change. Finally, some organisms cannot tolerate the change and just become extinct. Similarly, humans who cannot adapt to change would just be unable to survive.