We all know that there are some factors for species and animals to survive and reproduce, including environmental conditions, temperature, tolerance range, body size, weight, diets, seasonal and daily activity, behaviour, and the altitude at which they live. Animals migrate to find a new habitat because the change of environment and only species that have the tolerance for new environment could survive and reproduce. Human beings are the only organism that makes extensive use of technology to extend the limits of their natural tolerance range.
Significantly focusing on the factors for species and animals to survive and reproduce including environmental conditions, temperature as well as body size. Additionally, it also denotes that animals migrate to adapt to the changing environment and only species that have the tolerance for new environment could survive and reproduce. Human beings are the only organism that makes extensive use of technology to extend the limits of their natural tolerance range.