Hazards: air pollution, water pollution and other environmental problems.
It is chemistry that makes our life more colorful. Some difficult-to-wash stains can be washed away by chemical reaction for family use: furniture, clothes, bedding, food, etc. Moreover, for farmers, the fertilizers and pesticides used by farmers, in detail, such as fireworks and firecrackers set off at the Olympic Games, colored lights set off at night and so on.
Chemical pollution has brought many hazards to human health, including respiratory diseases, nervous system diseases, tumors, birth defects and so on. Even sudden death has caused many patients to lose their ability to work, their quality of life to decline and even lose their lives.
Sulfur dioxide in the air turns into acid rain, which pollutes rivers, kills fish and corrodes buildings.