Question

which part in human in neacher

Answer 1

Looking at how humans  survive when compared to other animals, it is not surprising that there is an age of humans, but not an age for other animals. Humans along with most other animals manipulate their surrounding nature in order to help them survive. For example, Beavers dam streams, which can cause a dramatic change in the surrounding ecosystem, in order to build a den and a place to raise their young. It is interesting that this change is viewed as natural, even though it is changing the environment to suite their needs, but clearing an area of land by humans to build a house is viewed as destructive and unnatural even though it may be done for the same purpose. In both of these cases an originally uninhabitable area was changed to one much better suited for the animal or human.