What is desert pavement, and how does it form? What will be an ideal response?
Desert pavement is a mosaic of close-fitting rocks found in the desert. Winds remove sand-sized
particles by deflation, leaving a surface of pebbles, cobbles, and boulders. Once desert pavement
forms, it protects the underlying material from further deflation.
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Which of the following is a variable gas?
a. Oxygen b. Argon c. Ozone d. Nitrogen
Most of the coal mining in the United States is done by
a. open-pit mining b. underground mining c. both
Clouds that have vertical development and produce thunderstorms are called
A) stratocumulus. B) cumulonimbus. C) nimbostratus. D) cumulus.
Weathering by unloading _____
a. results from alternating freezing and thawing of water b. results from salt crystal growth c. mostly affects limestone d. can result in formation of exfoliation domes e. most commonly affects sandstone