2016-2017学年 人教版 选修6 unit4 Global warming using language 课件 (7)
2016-2017学年 人教版 选修6 unit4 Global warming   using language 课件 (7)第3页

Revision

the burning of 1

a 2 called carbon dioxide

the increase of temperature

4

produces

leads to

global warming

cause

the burning of fossil fuels

a byproduct called carbon dioxide

builds up

green house gases

results in

catastrophe

human

energy