Researchers found a total of 138 volcanoes in the West Antarctic Ice Sheet overlying the West Antarctic Rift System, 91 of which had never before been identified. Basically they have never seen those types of volcanoes before.
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taking data from a population rather than a specific group of people to gather information from
(random and most representative on a large scale of people)
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The concept behind how the stock market works is pretty simple. Operating much like an auction house, the stock market enables buyers and sellers to negotiate prices and make trades. ... Investors can then buy and sell these stocks among themselves, and the exchange tracks the supply and demand of each listed stock.
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What are the answers? or is it a essay question