第四课 地球——我们的家园 小小绘图师

环境问题知多少

By Sarah 刘赛亚 Liu

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排放未处理的废水➡️​​​

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海水污染

鱼虾中毒

人生病

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燃煤电厂排放废气➡️​​ ​

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乱砍滥伐➡️​

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大气污染

引发呼吸道疾病

水土流失

水源枯竭

缺水进一步加剧