B Climates are often created by rain shadow effects. Rain shadows form when prevailing winds that carry moisture rise up against mountainsides and they condense and fall as rain or snow at the top. It loses most of its moisture at this point and when the dried up air is blown down the mountain, there is an increase in temperature. This brings warm and dry air which continue to pull out moisture from the flat lands.
San Andreas fault is scientifically known as a continental transform fault. This fault line extends over 750 miles through California. The tectonic boundary between the Pacific Plate and the North American Plate is horizontal to each other.
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