請幫我將這些題目翻成中文,並且用中文回答,感激不盡part2 - 暖化

以下題目是有關於
大氣 , 氣候 , 全球暖化 的問題
5.What the science behind humaninduced global warming is.
6.How human activity has resulted in increased emissions of greenhouse gases.
7.How positive- and negative-feedback cycles in the atmosphere might affect global temperature change.
8.What effects global warming might have, and how we can adjust to those changes.
前面還有四題
我將它分成兩個問題來問
一個問題都是20點
感謝大家的回答^^
Update:
另外一題的網址：
http://knowledge.yahoo.com.tw/question/question?qi...