帮忙写英语材料的Summary

来源:百度知道 编辑:UC知道 时间:2024/05/12 19:03:08
【贴原文的网址貌似是会被吞...】
文章是一篇有关全球变暖的英语文章
求 为这个文章写一个300字左右的summary
愿意帮忙的留下邮箱喔 我把原材料发过去
实在多谢!!

PM发来

http://zhidao.baidu.com/question/26782208.html
Global climate unexpected turn of events is warm
Earth’s atmosphere is ideally composed for life, with just the right mix of elements to sustain and support plants and animals. This mix includes small traces of greenhouse gases such as carbon dioxide, methane and nitrous oxide. Because they are composed of molecules of three atoms or more – C02, CH4, NO2-- they thicken up the atmosphere and help trap incoming sunlight after it has bounced off the Earth in the form of heat. Without them, the Earth would be a frozen iceball with temperatures hovering around 0 deg. Fahrenheit.

Greenhouse gases are a good thing, but we’ve all heard about the problems of too much of a good thing and that is clearly the case with greenhouse gases. Human activities are making massive changes in global atmospheric chemistry. Sin