Once upon a time, the creator thought that he wants some beautiful creatures for protecting and maintaining nature. So he created many living beings and also made human as all living being's protector. God explains about the nature that "Nature is an important and integral part and one of the greatest blessings for your life". Human also gave promise that "We will protect nature and we will be as a friend to nature". Human also protected nature and other living beings.
But after many couple of years human started to forget their promise to God and started destroying nature by cutting trees, destroying soil's fertility by using artificial fertilizer, destroying air by releasing smoke from vehicles, factories, Destroying water by chemicals releasing from clothes factory, Destroying forest by laying roads. We have to stop these activities and we have to recall our promise. And we have to be as a friend to nature. So we have to "SAVE NATURE".