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Answer:
Per capita income
Explanation:
Per capita income divides the national income by population size. This is used to measure a country's quality of life and standard of living.
The Us performs a study of the per capita income every 10 years by the United States Census Bureau and was last conducted in 2018.
A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully. When the magma chamber empties, the support that the magma had provided inside the chamber disappears.
Lack of O2, hunger, hypothermia... Everything can be a problem when in Everest