They fall under the Tertiary sector of the economy.
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<span>Currently, life expectancy in north america is about 75 years for men and 80 for women.</span>
The Richter scale is used, from 0.1 to 9.0 magnitude. The Richter scale is determined from the logarithm of the amplitude of waves recorded by seismographs.
Answer:
keeps oil prices low, reduces competition between oil-producing countries, allows oil sources to be used up faster
Explanation: