Many of the Native American dwellings at Mesa Verde and elsewhere in the western United States are located under overhangs that form along the contact between permeable and impermeable rock layers.
These overhangs (niches) were primarily created by what process?
A) exfoliation
B) salt-crystal growth
C) carbonic acid solution
D) hydrolysis
E) frost wedging
Question 2
Which of the following is true regarding humid continental hot-summer and humid continental mild-summer climates?
A) The humid-continental hot-summer and humid continental mild-summer climates are influenced by a single air mass year-round.
B) Humid continental mild-summer climates are located further equatorward than humid continental hot-summer climates.
C) Overall, humid continental mild-summer climates receive more precipitation than humid continental hot-summer climates.
D) Agriculture is not feasible in humid continental mild-summer climates due to the cooler weather, whereas it is very important in humid continental hot-summer climates.
E) Snowfall is notably heavier in humid continental mild-summer climates than in humid continental hot-summer climates and plays an important role in soil moisture recharge.
Old-growth redwood forest in western North America. Redwoods are the tallest trees in the world, wit
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