Green World的博客
望 二 环 保 63 班
ENGLISH
2007-3-25 21:37:07 阅读(19) 评论(0)
Dear Sir or Madam,
I’m writing to you to state my view on the water pollution problem. It is generally accepted that water pollution is a serious public hazard today. Rivers all over the world are becoming polluted with garbage and dangerous chemicals. Ships contribute to the problem because they rely on rivers for disposing of wastes. Oil and other chemicals can kill fish and make water unsafe
I’m writing to you to state my view on the water pollution problem. It is generally accepted that water pollution is a serious public hazard today. Rivers all over the world are becoming polluted with garbage and dangerous chemicals. Ships contribute to the problem because they rely on rivers for disposing of wastes. Oil and other chemicals can kill fish and make water unsafe
环保ENGLISH
2007-3-25 21:35:15 阅读(200) 评论(1)
Directions:
Water pollution is a serious problem threatening the survival of human beings, plants and animals. It is urgent that some strong measures be adopted to deal with the problem.
There has been a discussion recently on the issue in a newspaper. Write a letter to the newspaper based on the following outline:
1. Present situation
2. Suggested measures to be taken
3. Future prospect
Water pollution is a serious problem threatening the survival of human beings, plants and animals. It is urgent that some strong measures be adopted to deal with the problem.
There has been a discussion recently on the issue in a newspaper. Write a letter to the newspaper based on the following outline:
1. Present situation
2. Suggested measures to be taken
3. Future prospect
绿色链接
2007-3-25 21:26:58 阅读(16) 评论(0)
境污染导致青蛙变性 1/3蛙类面临灭绝
2007-3-23 22:31:29 阅读(16) 评论(0)
环境污染导致青蛙变性 1/3蛙类面临灭绝
广州日报
如果所有青蛙都变成雌性，世界将变成什么样子？
本报综合报道 法国媒体2月28日报道称，环境污染对生态系统与动物性别的影响，如今在实验室有了最明显的证据。瑞典进行的一项新研究表明，雄性蝌蚪在类似自然界中含雌性激素的污染物环境下，最终会长成雌性青蛙。
据报道，瑞典乌普萨拉大学实验室的科研人员，模拟欧洲、美国与加拿大等国的工业污染环境，并将三组蝌蚪喂养在含雌性激素污染物的环境中，以研究青蛙性别的改变。
实验结果令人震惊：在实验前，三组蝌蚪中雌性的比例都被控制在50%——自然界中，这是一种正常比例。结果，在实验过程中，喂养在含不同剂量雌性激素污染物环境中的三组小蝌蚪，性别比例都发生了变化。
其中一组小蝌蚪生活在雌激素浓度最低的污染物
广州日报
如果所有青蛙都变成雌性，世界将变成什么样子？
本报综合报道 法国媒体2月28日报道称，环境污染对生态系统与动物性别的影响，如今在实验室有了最明显的证据。瑞典进行的一项新研究表明，雄性蝌蚪在类似自然界中含雌性激素的污染物环境下，最终会长成雌性青蛙。
据报道，瑞典乌普萨拉大学实验室的科研人员，模拟欧洲、美国与加拿大等国的工业污染环境，并将三组蝌蚪喂养在含雌性激素污染物的环境中，以研究青蛙性别的改变。
实验结果令人震惊：在实验前，三组蝌蚪中雌性的比例都被控制在50%——自然界中，这是一种正常比例。结果，在实验过程中，喂养在含不同剂量雌性激素污染物环境中的三组小蝌蚪，性别比例都发生了变化。
其中一组小蝌蚪生活在雌激素浓度最低的污染物
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