Geology

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EPA Map of Radon Zones in the United States.

EPA map of radon zones in the United States, color-coded by predicted average indoor radon screening levels: red for levels over 4 pCi/L, orange for levels between 2 and 4 pCi/L, and yellow for levels under 2 pCi/L.

This detailed EPA map provides a visual representation of radon exposure risk across the United States, making it an essential resource for environmental science and health textbooks from elementary to high school levels. The map highlights the predicted average indoor radon screening levels by county, helping students understand geographic variations in radon exposure and the potential health risks in their communities.

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