It is undeniable that we did not inherit the earth from our ancestors but borrowed it from our children. Thus, we are responsible to protect mother nature. It is clear that there are many environmental problems which should take into account to preserve plants, animals and the earth. Some people believe that the most important issue is endangered species. In contrast, others think other environmental problems are more significant. In this essay, both sides will be discussed. I personally believe that there is no justification for dividing environmental difficulties.