protecting the environment英语作文
污染（pollution）是指自然环境中混入了对人类或其他生物有害的物质，其数量或程度达到或超出环境承载力，从而改变环境正常状态的现象。
environmental problems are becoming more and more serious all overthe world. for example, cars have made the air unhealthy for people to breatheand poisonous gas is given off by factories. trees on the hills have been cutdown and waste water is being poured continuously into rivers.furthermore,wherever we go today, we can find rubbish carelessly disposed. pollution is, infact, threatening our existence.
the earth is our home and we have the duty to take care of it forourselves and for our later generations. fortunately, more and more people haverealized these problems. measures have been taken to cope with these problemsby the government. laws have been passed to stop pollution. i hope the problemwill be solved in the near future and our home will become better and better.
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