Ptolemy was an astronomer and mathematician. He believed that the Earth was the center of the Universe. The word for earth in Greek is geo, so we call this idea a "geocentric" theory.With the development of the heliocentric model by Nicolaus Copernicus in the 16th century, the Sun was believed to be the center of the Universe, with the planets (including Earth) and stars orbiting it.
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any products that contain plants and also wood.
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The polar climate zone includes the areas of Earth near the North and South poles. The northern polar zone includes parts of Canada , United Kingdom, and Russia . The southern polar zone includes Antartica .
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