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人教版高中英语选择性必修第三册Unit3 ENVIRONMENTAL PROTECTION Period 1 课件

2024-01-05 19:06

人教版高中英语选择性必修第三册Unit3  ENVIRONMENTAL PROTECTION Period 1 课件

What is the graph about? What information can you get from it?
The graph is about the change of global 
Surface temperature.
It shows us that the global temperature
is rising steadily and continuously.
What happened in the picture? Do  you know what caused it?
A polar bear was dead and it is “skin and bones.”
The ice is melting on the mountain.
Global warming causes the melting of iceberg and some 
polar bears Suffer from the lack of food.
1.What is the evidence of global warming?
Warming ocean and atmosphere; melting and rising sea level; the starved polar animals; the extreme weather and natural disasters
2.Why is the “natural ”greenhouse effect important and necessary?
Because greenhouse gases trap heat and keeps the earth warm and habitable.
3.What are the consequence of high greenhouse gas emissions?
People produce huge amounts of extra greenhouse gases and more heat energy is trapped, causing the temperature to go up.
4.Why did the author mention the climate scientists’ warning?
Because the writer wants to warn us of the urgency of taking appropriate actions to tackle the issue.
5.What is the author’s purpose of writing the text?
To arouse our awareness of the problem of the rise of temperature and taking proper actions to address the global warming.

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