Preserving environment is what we ought to be concerned about. Since we use it daily, we should preserve it so that the environment will last perpetually. In ancient times, the environment was bountiful. There was no air pollution. In addition, natural environment was enough for all people on the grounds of the fact that there were not many populations. They gave an importance of preserving the environment. Hence, the surroundings were nice, and residences were livable. Nonetheless, nowadays, the environment has been changed. There is an enormous amount of air pollution. Trees are cut down. The people do not see the importance of them. There are now plenty of high concrete buildings replacing large trees. As people resources are selfish, need comfort and do not see the importance of preserving the environment, there is lack of resources, such as forest resources and mineral resources. Yet, if everyone gives an importance of preserving the environment and use it properly, the surroundings will surely be nice. There will be no air pollution. Moreover, it will constitute a positive effect upon not only physical health but also mental health. Preserving the environment brings a number of benefits for you as well as others.