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what is the difference in altitude between the coastal ranges and
the sierra nevada?

Farther south the Sierra Nevada rise to over 10,000 feet in elevation. The Sierra Nevada, like the Coast Range, parallel the coast, but the crest over most of its length is about 150 miles inland. Thus, between the two ranges there is a broad, flat valley averaging 45 miles or more in width.

Explanation:

the answer is d. made landless peasants that owners of large haciendas

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.