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The greenhouse gases methane and chlorofluorocarbons (CFCs) account for 20% and 14% of the global warming effect, respectively. Regular monitoring of greenhouse gas levels and their environmental impact is conducted by the Intergovernmental Panel on Climate Change (IPCC). The contributions of various greenhouse gases are as follows: carbon dioxide (60%), methane (20%), CFCs (14%), and nitrous oxide (6%). Minor contributors include water vapor and ozone. Are the stated percentages for methane and CFCs accurate?

1. Yes, the percentages provided are accurate.
2. No, the percentages provided are not accurate.
3. The percentages for methane and CFCs are incorrect.
4. The stated values for methane and CFCs are not correct.

Correct answer: Yes, the percentages provided are accurate.

Solution

The given percentages of CH4 (20%) and CFCs (14%) match the data provided in the question, making the statement correct.

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