小学生温室效应英语演讲

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建议看下inconvenienttruth,下面是链接,就是讲关于温室效应的,可以提炼一下做演讲.带中英文字幕,很容易归纳总结.http://v.youku.com/v_playlist/f28256

概论温室效应是指透射阳光的密闭空间由于与外界缺乏热交换而形成的保温效应,就是太阳短波辐射可以透过大气射入地面,而地面增暖后放出的长短辐射却被大气中的二氧化碳等物质所吸收,从而产生大气变暖的效应.大气中

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楼主,问题再问：英语演讲稿……再答：内容再问：大学三分钟演讲……简单易背的再答：主要演讲什么再问：青春再答：额，，，，，这个还真不太会再问：……

温室效应是由环境污染引起的温室效应是指地球表面变热的现象.其形成原因是由于现代化工业社会过多燃烧煤炭、石油和天然气,这些燃料燃烧后放出大量的二氧化碳气体进入大气造成的.二氧化碳气体具有吸热和隔热的功能

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事在人为,具体看我们能采取多大的决心和措施～对策如下虽然迄今为止,我们无法提出有效的解决对策,但是退而求其次,至少应该想尽办法努力抑制排放量的增长,不可听天由命任凭发展.首先,暂订2050年作为目标.

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