ppt, 1.77 MB
ppt, 1.77 MB
pptx, 101.19 KB
pptx, 101.19 KB
pptx, 736.73 KB
pptx, 736.73 KB
What are the problems facing our world?
Why do some people reject global warming?
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Review

5

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amiudyanin

9 years ago
5

Very informative!

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