Preserving environment is what we ought to be concerned. 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. 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.
Therefore, we should considerably realize the importance of preserving the environment. It is the duty of you as well as others. If we cooperate to preserve the environment, our life will be better and better.