Protecting the Ozone Sphere is the Duty of Everyone

With the intensification of human activities, the ozone layer of the earths surface appears serious hole. Maybe ozone layer is abstract to many people. Let me take a metaphor, ozone layer just like the clothes of our human beings. If our clothes are damage, we will get hurt at last. Recently, as the developing of science and technology, there are more and more new products coming into the world. They bring great convenience to human beings, but they also join the group of damaging ozone sphere at the same time. For example, Freon coming from refrigerator does harm to the ozone sphere. If the ozone layer is destroyed, our mankind will have to face great damage. We will have more chance to get skin cancer, cataract and so on. And there are other living things will be affected. The marine ecosystem also couldnt avoid this disaster.