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possible explanation for a set of observations or possible answer to a scientific question
the center of the atom which contains the protons and neutrons; in cells, structure that contains the cell's genetic material (DNA) and controls the cell's activities
an economic system based on open competition in a free market, in which individuals and companies own the means of production and operate for profit
A policy in which a strong nation seeks to dominate other countries poitically, socially, and economically.
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