Course-grained sediments such as pebbles and cobbles often comprise the ________ in desert environments
A) dunes
B) loess
C) blowout
D) desert pavement
Answer: D
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Climate scientists are deeply concerned about tipping points. What are tipping points and why should we avoid crossing them? Provide two examples of tipping points and explain why they are dangerous.
What will be an ideal response?
Alkanes belong to which class of hydrocarbons?
A) alkali B) aromatic C) saturated D) unsaturated
Why is wind less effective than moving water at picking up and moving materials?
A) Air does not move very far B) Air is less dense than water C) Air moves faster than water D) Air moves slower than water
What happens when rocks oxidize near Earth's surface?
A. Oxygen combines with water to create weak acids that weather rocks. B. Minerals in the rock release oxygen that can break down adjacent rocks. C. Minerals, especially those with iron, combine with oxygen. D. Oxygen combines with silica to make quartz.