文档介绍：greenhouse
第1页/共20页
What is the greenhouse made and used for?
A greenhouse is made of glass and is used for growing plants, especially during cold weather.
第2页/共20页
第3页/共20页
greenhouse gases
第4页/共20页
第5页/共20页
What’s greenhouse effect?
第6页/共20页
greenhouse effect
第7页/共20页
Unit 4
Global Warming
第8页/共20页
Read the text quickly and find the answer to the questions:
Scanning
wrote the magazine article? What is the name of the magazine?
are the names of the three scientists mentioned in the article?
Sophie Armstrong, Earth Care.
Dr Janice Foster, Charles Keeling, George Hambley.
第9页/共20页
3. What do they think about global warming? Do they agree with one another?
They don't agree with each other.
Dr. Janice Foster thinks the effects of global warming could be very serious.
George Hambley thinks global warming will be mild with few bad environmental consequences.
Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide.
第10页/共20页