Water+carbon dioxide = tears "The last drop of water of mankind will be the most regretful tear after environmental damage." Facing the familiar word "water" and the indispensable source of life-water. How much do we know? As we all know, there is no life without water. The human body is 70% made up of water. It is conceivable that if there is no water on the earth, what should plants and animals do? How do humans survive? Everyone knows that water is the source of life, but how many people care? In recent years, the wetland area has shrunk and the ecology has deteriorated. Due to population growth, cultivated land expansion and changeable ecological types, the wetland area in China has shrunk seriously. Years of reclamation in the Great Northern Wilderness reduced the largest wetland area in China by 60%, and the wetland area in Sanjiang Plain decreased from 4.43 million hectares in the early days of the People's Republic of China to 6.5438+0.9 million hectares. In other words, if emergency protection measures are not taken, the wetlands in Sanjiang Plain will be lost after more than ten years. People cut down excessively, reclaim land around the lake, and sediment enters the lake. Are unconsciously destroying the ecosystem on which we live. Once the ecosystem is out of balance, then we humans are not far from the end of the world. The main problems that our country is concerned about now are serious water pollution and huge losses. According to the water quality evaluation of more than 700 rivers in China with a length of about 6,543.8+10,000 kilometers, 46.5% of the rivers are polluted, 654.38+ 00 and 6% of the rivers are seriously polluted, and the water bodies have lost their use value, while more than 90% of the urban waters are seriously polluted. Among the seven major river basins in China, the pollution levels of Taihu Lake, Huaihe River, Yellow River and Songliao River are also quite serious, and the polluted river reaches account for more than 60%. As many as14 people in China use water that does not meet the hygiene standards. Water pollution directly affects the life and living environment of our people! As far as the Yangtze River near our town is concerned, many residents wash clothes and take out garbage by the river, and various factories constantly discharge garbage into the river, which seriously leads to the deterioration of the river, the reduction of water volume and the narrowing of the river basin! Listen, haven't you heard-our mother river is screaming and calling us "children!" I don't want to become the Yellow River! "Let's look at the true nature of water pollution. Various harmful substances, such as pesticides, heavy metals, chemicals, pathogenic microorganisms, oils and various waste radioactive substances, were artificially discharged into water, which exceeded the purification capacity of water itself, and water pollution occurred. A large number of water pollutants are discharged into rivers, causing serious inland water pollution, which in turn "defiles" lakes and bays, and even groundwater is doomed. Water pollution is very harmful to human beings, and pathogenic bacteria in sewage will cause the epidemic spread of infectious diseases; All kinds of industrial wastewater, pesticides and other harmful substances discharged into the water will also cause accidental poisoning death of drinkers; Water polluted by heavy metals enters the human body, which will lead to unexpected and serious consequences such as chronic poisoning! Here, I am not alarmist, saving water is imminent. Water is the source of life, the blood of industry and the lifeblood of cities. Being located in the south, we certainly don't know the sufferings of the people in the northwest. Serious water shortage is really a "prosperous" desert! But we don't know. Think about our family. We don't even turn off the tap when brushing our teeth. I really don't know how painful it is to run water. For example, the tap water pipe in our house leaked or burst and was not repaired in time, and the "tap water flushing method" was used to thaw seafood. In fact, some water can be recycled. But some people think that it is more important not to worry about those water money. Bubble baths and water gun fights have become the most extravagant things for the people of Sharbat. I think, how can we make a big foot without starting from a little bit? It is said that water can carry a boat and also overturn it. Where there is water, there is life. Water has given us the most precious living conditions, so it will certainly be able to appeal to the judge and take back all our precious things. But only if you go your way and I cross the bridge. If we don't cherish it and waste it again and again, one day, water will definitely "waste" us! In an experiment, we found an interesting phenomenon, that is, goldfish in tap water died faster than goldfish in river water. The students put forward many meaningful conjectures. Some students think there is some goldfish food in the river, but not in the tap water. Some students think that there is more oxygen in the river than tap water, and goldfish in tap water will die faster because of lack of oxygen. But in any case, one thing is certain: the harm of sewage to animals is very obvious. In real life, it is not difficult to find that sewage from nearby factories is being discharged into the river in the nearby Xiaoling River and ditches. This shows! The waste and pollution of water will produce a lot of wastewater, and the new pollution of water will cause "serious injury" to the environment. We can also see that the surface of sewage is constantly bubbling, which is the washing powder and tableware detergent discharged after people use it. This also shows once again that another main reason for water pollution is that people use a lot of washing products. Saving water is also a hot issue in society now. " Save water, care for life "billboard," save glory, waste shame. Start with me, start with everyone. "Publicity plan", start from scratch, save water, use water scientifically and create a new life. "Public service advertisements and so on. Because many people don't have the concept of saving water at all, and because water has always existed as a cheap product in real life. Waste is a crime. It seems that too many people don't realize the seriousness of the matter, for your next generation, for your tomorrow and for your present! Before we drink our bitter wine, let us "yield easily"; First, "catch them and bring them to justice", and then taste our homemade bitter medicine; Let's "have mercy" before tasting the bitter fruit of our cooking-because it's not too late. Water is tasteless, but tears are salty. Isn't it equal to adding some "seasoning" carbon dioxide to the water? I firmly believe that fish will never be homeless at this time. At that time, we were also floating in the ocean of happiness. ...

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