KSA Reading Grade 10 Practice Questions - Kentucky Summative Assessment Reading - Grade 10 Exam

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Read the passage snippet: 'Mammoth Cave, located in central Kentucky, is the world's longest known cave system. It was formed over millions of years as mildly acidic groundwater dissolved limestone strata, carving out vast subterranean passages, sinkholes, and chambers.' What is the central idea of this snippet?

Limestone mining in Kentucky has significantly altered subterranean river channels. Mammoth Cave formed over millions of years through groundwater dissolving limestone strata. Central Kentucky experiences frequent seismic activity that forms deep underground caverns. Tourism in Mammoth Cave National Park has driven local environmental conservation efforts.

Correct Answer:

Mammoth Cave formed over millions of years through groundwater dissolving limestone strata.

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