Explains what causes sinkholes. Beautiful photos, fact-filled text, and helpful infographics help readers learn all about the science behind this phenomenon as well as ways that people study or protect it. Levels Interest Level: Grades 4-7 Reading Level: Grades 3-5 Dewey: 550 Lexile® Measure: 680 F&P Level: U Pricing Library Bound: $31.35 (List) / $21.95 (S/L) 978-1-63517-912-5 Paperback: $9.95 978-1-64185-014-8 Multiuser Hosted eBook: $24.95 978-1-64185-115-2 Related Websites US Geological Survey: Sinkholes Weather Wiz Kids: Sinkhole Questions PBS: Sinkhole Science is Actually Quite Simple All Books in This Series Search Find another Focus Readers title: Go