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wypward(½ð±Ò+3):»¶Ó­Ð³æ 2010-05-29 14:36:04
wypward3(½ð±Ò+20, ·­ÒëEPI+1):ÏȸøÄã20BB£¬Â¥ÏÂûÓиüºÃµÄ»°£¬ÔÙ°ÑʣϵĸøÄ㣬лл 2010-05-29 14:38:10
sirljz(½ð±Ò+1): 2010-05-29 20:52:58
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Acid rain refers to atmospheric precipitation like rain ,snow and other forms of precipitation that has a pH of less than 5.6, and it is a manifestation of air pollution.Acid rain can impact upon human environment in various ways.As it falls in the river or the lake,it can prevent the aquatic organism from growing,worse still,some even die out. what's more,acid rain is also the prime criminal of soil acidification,which will lead to poor soil and a reduction in production.In addition,acid rain can also erode building materials.
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2Â¥2010-05-29 10:19:28
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wangqi2009

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wypward(½ð±Ò+1):лл²ÎÓë 2010-05-29 14:36:17
wypward3(½ð±Ò+5):лл 2010-05-29 14:38:24
sirljz(½ð±Ò+1): 2010-05-29 20:53:04
Acid rain is definfed as atmorpheric precipition has a PH of less than 5.6, in the forms of rain, snow and other ones. Obviously, it is a manifestation of air pollution and its impact can be shown in various aspcts. As it falls into rivers and lakes, the growing of aquatic organism like fishes and shrimps will be affected seriously,worse to make their nember largely reduced and even disappeared. Meanwhile, acid rain will cause soil acidfication and then lead to poor soil ,a reduction in production and destroying of the forest.  In additoin to that building materials also can be  eroded.
3Â¥2010-05-29 12:36:52
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