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A. A careful analysis biologically 

B. What’s global warming£¿

C. Solution to the terrifying result

D. Greater danger of extinction

E. Many shocking things found 

F. A shocking report

1.___________

   The earth is getting warmer. People burn coal, oil and gas and this produces carbon dioxide, methane and nitrous oxide. These gases, called “greenhouse gases”, prevent the heart of the sun from leaving the earth’s upper atmosphere and this makes the earth warmer.