In life, we often see the phenomenon of wasting and polluting water, such as: the faucet is not tightened, dripping; Waste water and let it flow; Domestic wastewater is discharged at will and so on.
Various harmful substances, such as pesticides, heavy metals, chemicals, pathogenic microorganisms, oils and various waste radioactive substances, are artificially discharged into the water, which exceeds the purification capacity of the water itself, thus causing pollution. A large amount of sewage is discharged into rivers, causing inland water pollution, which in turn pollutes lakes, bays and even groundwater. Water pollution is very harmful to people's health, and pathogenic bacteria in sewage will cause the epidemic of infectious diseases. All kinds of industrial wastewater, pesticides and other toxic substances discharged into water will poison people who drink water. Water polluted by heavy metals enters the human body, which will make people chronically poisoned and so on.
This summer, my father took me to the Dongguan Bridge. We want to breathe fresh air, but the smell is terrible. When we looked at the river, we saw that the water was full of rubbish and the water became very turbid. I really don't understand why people don't understand how we can survive when water resources are scarce and destroyed.
China is a country short of water resources. Although the total reserves of water resources reach 2.8 trillion cubic meters, ranking sixth in the world, China supports the world and is listed as one of the water-poor countries with 13 people. Experts predict that the population of China will reach the peak of 65.438+0.6 billion in 2030. Coupled with the increasingly serious water pollution, by then, China will become a country with serious water shortage.
Therefore, we should protect water resources and prevent water pollution, starting from the small things around us. Save water and turn off the tap. We should vigorously publicize the knowledge of water resources protection. Otherwise, the last drop of water that human beings see will be their own tears!