Source 1
Josph N Global warming www.pewtrusts.org 1996-2010
Found on
10-11-10
source 2
source 2
Mark G Rain forest www.nature.org 2010
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found on
10-11-10
Source 3
Source 3
Dr.Shan de silva volcanos www.volcano.oregonstate.edu 2010
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found on
10-12-10
source 4
source 4
10-12-10
Source 3 link does not work.
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