Source: http://residence.educities.edu.tw/atom/taco/note15.htm

In recent years, news about the discovery of a hole in the ozone layer of the atmosphere in the Antarctic region has shocked many people. The reason is that the ozone layer has the ability to absorb ultraviolet rays from sunlight. force.

Ultraviolet rays are a type of light that is invisible to the naked eye, but it is extremely harmful to living organisms. It often causes pathological changes in living organisms after being exposed to it for too long. In the past, because part of the atmosphere was made up of ozone, this part absorbed most of the ultraviolet rays, so the ultraviolet rays that directly came into contact with the surface were not too much, and the harm to living organisms was not great.

But when a hole is discovered in the ozone layer in the Antarctic region and the global ozone layer gradually becomes thinner, this means that the original protection of living things on the earth will gradually disappear. Ultraviolet rays will directly damage the living things on the earth and cause a large number of diseases due to the gradual disappearance of the ozone layer. occurrence, and even trigger species extinction.

The reason why the ozone layer disappears is that a large amount of chlorofluorocarbons are emitted into the air. After being exposed to sunlight, these chlorofluorocarbons begin to decompose, and a large amount of chlorine is released into the air. When it encounters ozone, a series of chemical changes occur. Ozone is destroyed. What's more serious is that one chlorine atom can destroy 10,000 ozone molecules.

This destruction will cause the ozone layer to gradually thin or even disappear. And a large amount of ultraviolet rays will be able to directly illuminate the ground. This will result in a significant increase in the chances of humans getting skin cancer and cataracts, and the plankton living on the ocean surface will also be in danger of dying. Agricultural products are also affected by pests and diseases, resulting in a significant reduction in output.
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