Grade level: 3rd – 5th

Skills: circle graph

Related environmental issues: Climate change

Area level: National

Human activities since the beginning of the Industrial Revolution have increased the atmospheric concentration of greenhouse gases and it became one of the main causes of climate change. The circle graph shows how much greenhouse gases is produced from each sector in the United States.

1. Which sector produces the largest amount of greenhouse gases?
2. Which sector produces about one third as much carbon dioxide as the transportation sector?
3. What percent of greenhouse gases is produced either in the industry sector or the commercial and residential sector?
4. Which sector produces about half of greenhouse gases together with the transportation sector in the United States?

Source: US Environmental Protection Agency

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Answer keys

1. Electricity sector
2. agriculture sector
3. 33% (21+12=33)
4.  Industry sector