Upper Intermediate Stories
You will hear a
story about greenhouse gases.
1. What is increasing
the level of greehouse gases and changing the earth's climate?
2. When was there
30 percent less carbon dioxide in the air?
3.How much higher
is the the level of methane than it was 200 years ago?
4. How much higher
are the levels of nitrous oxide?
5. Why will some
islands and major cities be uninhabitable?
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