Multiple choice

The following human activities produce greenhouse gases except:

  1. Driving cars

  2. Walking, biking, & swimming

  3. Animal agriculture

  4. Generating electricity from natural gas, oil, & coal
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Walking, biking, and swimming rely on human muscle power and do not burn fossil fuels, meaning they do not produce greenhouse gases. In contrast, driving cars, raising livestock, and burning fossil fuels for electricity are major sources of carbon dioxide and methane emissions.

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