Asked by caleb
How do more frequent droughts affect rocks?
They cover sedimentary rocks with igneous rocks.
They make rocks more brittle and prone to erosion.
They make rocks stick together through cementation.
They expose layers of rock that were buried.
All Answers 1
Answered by
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They make rocks more brittle and prone to erosion.
Explanation: Droughts reduce moisture and vegetation cover, increasing thermal stress, cracking, and wind erosion of rock and soil. The other choices are incorrect: droughts don’t create igneous cover, cementation requires water and minerals (so is less likely), and while drying lakes can expose buried layers, the general effect of more frequent droughts is increased brittleness and erosion.
Explanation: Droughts reduce moisture and vegetation cover, increasing thermal stress, cracking, and wind erosion of rock and soil. The other choices are incorrect: droughts don’t create igneous cover, cementation requires water and minerals (so is less likely), and while drying lakes can expose buried layers, the general effect of more frequent droughts is increased brittleness and erosion.
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