Bạn tham khảo:
Current water pollution is not too strange to us. This situation is more and more serious with most countries in the world. The cause of this problem is clear. The first is awareness of people in coastal or residential areas. Second, there are now many industrial factories, and at the same time, the water pollution is getting worse, unconscious factories discharge a large amount of untreated dirty wastewater. to rivers and lakes. This has caused the death of onions of aquatic organisms, people living around the polluted area more and more diseases are suspected of using dirty water in all activities
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