Which dashed line in this figure would be the wave base?
A. 1
B. 2
C. 3
D. 1 and 2
E. 2 and 3
Answer: C
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Coarse sand grains deposited across the landscape in an amorphous sheet is known as a ________
A) gibber plain B) sandplain C) wadi D) ventifact E) sand dune
The moon has active volcanoes and plate tectonic processes.
Answer the following statement true (T) or false (F)
Which feature on this diagram is a cirque?
A) 1, the circular depression at the head of the valley
B) 2, a lake in the upper valley
C) 3, a steep ridge
D) 4, a valley that is above the level of the main valley
People suffering from AIDS have a weakened immune system. Because of their disease, people who have AIDS are
A) more vulnerable to the risk of nitrogen in the air. B) less vulnerable to the risk of bacteria in the air. C) more vulnerable to bacteria that are less of a risk to healthy people. D) less vulnerable to any type of fungal, bacterial, or viral infection.