Global environmental health

According to the survey of the World Health Organization, 70% people in the world can't drink safe and hygienic drinking water. At present,150,000 children under the age of five die every year, most of which are related to drinking water. According to United Nations statistics, 250,000 people around the world get sick from drinking water or die from lack of water every day. Water pollution not only threatens human beings, but also brings huge losses to fisheries. It seriously kills fish and shrimp, interferes with fish reproduction and greatly reduces the yield and quality of fish. Sewage also pollutes farmland and crops and reduces agricultural output. Water pollution also causes other environmental degradation, affecting people's sightseeing, entertainment and recuperation. Water is not only the source of life, but also extremely important to human beings, and the pollution is so serious. Therefore, we should prevent and protect water resources and make rational use of them. Automobile exhaust emission. . .