<<      I want to save clean air in our planet. Of course I want to save forests, animals, clean water, and some other natural resources. To save these resources can leads to clean mountains, enough foods, and beautiful oceans. But if we lose clean air, it would harm our body itself. Especially in big cities, the air is polluted to a great extent. This could lead to pulmonary diseases. By emitting some harmful gases, we destroy ozon layers. Thus, we are radiated UV or some other harmful rays. This could lead to some impairments such as skin cancer or leukemia. This could prevented by saving some unnecessary consuming and preservation of the forests.      In big cities, the air is truely polluted. This is said that 20% of people live in a big city suffer from some pulmonary or tracheal disorders. I don't want this to happen. To prevent this, we must save our needless consuming. Electric cars could be helpful to a great extent. On top of that, if each of us stop smoking, that could also help to prevent these pulmonary impairments.      By emitting unnecessary gases to the air, we also make ozon holes. We are usually protected from harmful rays by ozon layers. But some gases destroy these layers, thus make ozon holes. Then, the harmful rays directly act on our body. Our bodies, our cells, are extremely fragile to these harmful rays. Some of our cells are converted to a malignant ones, and end up in tumors. I don't also want this to happen.      To prevent these harmful effects on our bodies, we should reconstruct our life style. We consume too much to satisfy unnecessary desires. Of course, we can keep our air clean by preserving forests. But first, we must reconsider our life style itself. I believe that could leads to the clean air in our planet, the Earth.