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This chart gives data on greenhouse gas emissions in the United States from 1990 to 2013. Which questions would help clarify the evidence in the chart?
1-What percentage of total greenhouse gas emissions is caused by natural sources?
2-Should industries emitting carbon dioxide in huge amounts be fined or punished?
3-Why are carbon dioxide emissions so much higher than other greenhouse gases?
4-Why did the quantity of carbon dioxide emissions stay constant throughout the period?
5-What is the chemical formula for methane?
Answers: 2
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This chart gives data on greenhouse gas emissions in the United Sta...
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