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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. carbonic acid solution
b. hydrolysis
c. salt-crystal growth
d. frost wedging
e. exfoliation

1. 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. carbonic acid solution
b. hydrolysis
c. salt-crystal growth
d. frost wedging
e. exfoliation
2.Native Americans lived in features at Canyon de Chelly and Mesa Verde formed by salt-crystal growth.
True or False
3.Because the climate of a region slowly changes and tectonic adjustments slowly occur, the landscape
a. is constantly at a threshold condition.
b. is usually in a state of dynamic equilibrium.
c. is continuously adjusting to new conditions that develop.
d. all of the above
e. B and C only