The earth's water reserves are very rich, * * * as much as145 billion cubic kilometers. Although there is a huge amount of water on the earth, it is pitiful that it can be directly used for production and life. First of all, seawater is salty and bitter, so it can't be drunk, irrigated or used for industry. Secondly, the earth's fresh water resources only account for 2.5% of its total water, and more than 70% of these rare fresh water resources are frozen in the Antarctic and Arctic ice sheets, and 87% of the fresh water resources are difficult to use, plus the hard-to-use alpine glaciers and permafrost snow. The fresh water resources that human beings can really use are part of rivers, lakes and groundwater, accounting for about 0.26% of the total water of the earth. The global freshwater resources are not only in short supply, but also the regional distribution is extremely unbalanced. What should we do to protect water resources in the face of this severe water resources situation?
1, has the heart of cherishing water. For a long time, people generally think that water resources are inexhaustible. They don't know how to cherish water resources, and some people even waste water resources in vain. For example, when washing hands, washing face and brushing teeth, let the water flow all the time; Equipment leaks, maintenance is not timely, and so on. This makes water resources more and more scarce, and tap water is even more valuable. Cherishing water resources is the basis of saving water. Only by recognizing that "saving water is glorious and wasting water is shameful" can we always pay attention to saving water everywhere.
2. Do not pollute water resources. Nowadays, water resources are always polluted: pesticides, heavy metals, chemicals, oils and all kinds of garbage are artificially discharged into the water; A large amount of domestic sewage is also discharged into rivers, causing water pollution. Even the underground water is born to die, and the discharged domestic sewage greatly exceeds the self-purification capacity of the water itself, so the water pollution is becoming more and more serious. Therefore, in order to prevent water pollution, we should start from the small things around us, such as using phosphorus-free washing powder, … When we see the behavior of destroying water resources, we should actively report to the relevant departments.
3. Use water-saving appliances. In addition to developing good water habits, it is also very important and effective to use water-saving appliances in family water saving. However, in order to save money, many people would rather let themselves go than replace water-saving appliances. In fact, according to statistics, a family that uses water-saving appliances saves more water than a family that doesn't, which is enough for 654.38 billion adults to drink for 2~3 months! Therefore, we should try to replace our home with water-saving appliances!
4. More publicity. For a long time, most people have the idea of saving water, but there is no concrete action, and extravagance and waste are still common. Therefore, we should vigorously publicize the knowledge of water resources protection and set a good example for the general public to imitate!
Protecting water resources starts with me, because protecting water resources means protecting human beings themselves.