文档预览： New light on plant domestication and the origins of agriculture Much of the current research on the domestication of plants has been published by botanists. The earliest and richest evidence of plant cultivation has been found in Southwest Asia. 点击下载

文档预览： Buoyancy and Archimedes Principle A little history… In the first century BC, the Roman architect Vitruvius related a story of how Archimedes, the Greek scientist, discovered that a goldsmith had tried to cheat King Hiero II… The king had given the ... 点击下载

文档预览： ?redniowiecze Pierwsze szko?y na terenie ziem polskich powsta?y w ?redniowieczu. Po przyj?ciu Chrztu przez Mieszka, Polska znalaz?a si? w kr?gu kultury ... ?redniowieczne szko?y Szko?y parafialne By? to najni?szy stopień ... 点击下载