Which of the following air masses pictured here is dry, unstable, and hot?
A. mP
B. cT
C. cP
D. mT
Answer: B
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The occurrence of earthquakes in the absence of seafloor spreading, oceanic trenches, or volcanic activity is a characteristic feature of
A) convergent boundaries between plates. B) divergent boundaries between plates. C) subduction zones. D) transform fault boundaries between plates.
Midlatitude grasslands are found only in North America.
Indicate whether the statement is true or false.
Which of the following will NOT cause air to become more unstable?
A) intense solar heating which warms the air from below B) subsidence of an air column C) forceful lifting of air D) upward movement caused by general convergence
In which of the following molecules does the carbon atom have a nearly tetrahedral distribution of electron density?
A) C2H2 B) C2H4 C) C2H6 D) none of these