Answer: The overall lateral lenght of the San Andreas Fault is estimated by measuring the distance on similar terranes on both sides of the fault (continental x pacific). The lenght is increased by eathquake occurrence (here given as 5m per event) and a regular annual displacement rate (estimated in 0,10m per year).
Also, it is acceptable to consider a time lapse of 45 years between each earthquake (considering the major events of 1857, 1906, 1957 and 1989).
Those values of lenght on the fault are considered to vary from 150 to 350 miles. If we apply simple median arithmethical value of 250 miles between these numbers, against the obtained displacement rate of 5,1 meters (let´s set the annual displacement rate aside to balance) we have: 250 miles divided for 0,003 miles (5,1 meters converted to miles) is equal to: 83.333.
So, more than 80.000 thousand eathquakes (considering the movement was mostly made by these earth intercurrences) would be an acceptable number to account for the total actual displacement on the SAF.
Answer:
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C. Traveled by camel so they could escape attacks from wild animals
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The correct answer is - oil resources.
The North Africa region is a region that has an abundance of oil and natural gas reserves. Their economies mostly revolve around the export of this two resources. But the oil extraction comes with a big price, damaging the environment. Be it on land or in water, the oil extraction effectively destroys the surrounding area. The oil spills as well, are one of the worst things that can happen to the environment, they have a devastating effect and cause the dying out of whole ecosystems, and their effects are long term.
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