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  1. ...mankind settle down the destruction to rainforest is destroying the habitat of the rhinoceros by a large margin. 4... occupied more and more forest land , rhinoceros' herds of cattle especially ...

    分類:科學 > 其他:科學 2008年02月05日

  2. ...national protection animal in China, stealing and destroying will be punish according to the "Natural... tropical and subtropical sea zone. 4.The perch lands are: Mediterranean, African...

    分類:科學 > 其他:科學 2008年02月10日

  3. ...soil productivity, which is causing extensive Land abandonment, is a widespread byproduct of current ...and temperate dry forests, are being destroyed rapidly. At present rates, some critical forest...

    分類:科學 > 其他:科學 2005年08月10日

  4. .... Although such kinds of land use appear to have economic justification, many serious ...by reducing their numbers and destroying habitat. These trees are adapted...

    分類:科學 > 其他:科學 2008年06月03日