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In addition to too much garbage in the river, the water is too dirty, and some problems are that the inflow of some sewage will cause pollution or heavy metals in the river.
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And if you have too much garbage and too dirty water, there are no other problems, and generally in the river, there are no other problems.
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There may also be a variety of domestic waste, or chemical inflows.
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Water pollution, biological pollution (such as the water hyacinth incident that grew wantonly).
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What do you mean by that? There is a lot of garbage in the river, and the water is dirty, on the one hand, the growth of fish and other organisms in the river will have problems, but more serious will affect the safety of people. That's not good.
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In addition to too much garbage in the river, the water is also very dirty because of the poor flow of water. caused by the siltation of garbage in the river.
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There is too much garbage in the river and the water is too dirty. The society has caused serious pollution of the river water. It is harmful to the ecological environment.
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More than 20 degrees of water boiled glue, what else is needed? There is pollution, chemical pollution and garbage are caused by the pollution of many people.
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The problem is also very normal, because there is too much garbage, and the water will definitely be dirty, which is caused by the problem of human character.
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There is too much water in the river except garbage.
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In addition to too much garbage and too dirty water, there are also some serious pollution problems.
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In addition to too much garbage and too dirty water in the river, there is also a serious problem that there is too much mud and it is blocked.
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There is too much garbage in the river, the water is too dirty, what is the problem, there is nothing else but garbage, the water is really too dirty.
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In addition to too much garbage and dirty water in the river, there should be water pollution and excess nutrients.
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In addition to the fact that there is too much garbage in the river and the water is too dirty, what is the problem?
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So in addition to the fact that you have too much garbage and too dirty water, what else is the problem? There are many problems in the river now. Departments should think of governance.
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1.White trash. I am very respectful of many residents throwing used plastic bags directly into the river, resulting in most of the garbage on the river surface being plastic bags, all colors.
2.The stump is lost and the head leaf is opened. There are many trees by the river, and the old branches and leaves naturally let the manuscript fall into the river, resulting in a lot of leaves on the river.
3.Animal carcasses. Many farmers throw dead pigs, dead chickens and other animal carcasses directly into the river.
4.Discarded supplies.
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The most direct harm is the pollution of the river, which affects the fish and other organisms in the river, and destroys the ecosystem. Water is the source of life, and water pollution will cause direct or indirect effects on plants, animals, and people. Intercept domestic garbage floating shelter and discharge:
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The main reasons why the river water becomes dirty are:
1) Untreated industrial wastewater; Some heavy and light industries such as fertilizer plants, food processing, paper industry, coal mine processing, petroleum refining, etc., emit harmful substances containing organic matter or heavy metals.
2) Untreated domestic sewage;
3) Farmland sewage with a large number of chemical fertilizers, pesticides, and herbicides; The main reason is that the sewage contains a large amount of organic matter such as N and P, which causes eutrophication of the water body.
4) industrial waste and household waste piled up near the river;
5) soil erosion;
6) Mine sewage.
The pollution of Heshui is mainly caused by industrial wastewater, domestic sewage and farmland sewage.
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If you conserve water, the river will get dirty more slowly.
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All kinds of garbage, household garbage, waste products, everything.
trash pontoons;
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There is nothing in it that you can't think of, and there is nothing that you don't have in it.
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Answer: used to be
First of all, through the comparison of Chinese and English sentences, it can be seen that Yingwei defeats the text and refers to the lack of Sun Wei's sentences"In the past"The expression of the phrase"In the past"The English expression is: used to do be so the answer is 凯敏: used to be
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