Rock is composed of different combinations of minerals. Smaller rocks come from the breakage and weathering of bedrock and larger rocks. Soil is made partly from weathered rock, partly from plant remains--and also contains many living organisms. Benchmark 4C The Physical Setting: Processes that Shape the Earth Grades 6-8, page 73
The Celts (/ËkÉlts/ , occasionally /ËsÉlts/ , see pronunciation of Celtic) were people in Iron Age and Medieval Europe who spoke Celtic languages and had cultural similarities, although the relationship between ethnic, linguistic and cultural factors in the Celtic world remains uncertain and controversial.
The Celts were well established in Ireland a century before Christ, and they dominated the island for nearly a thousand years, resisting challenges and absorbing influences from other cultures for many centuries more. To this day the core of Ireland's heritage remains unmistakably Celtic. Writing depicts the Celts as tall and warlike, placing their arrival in Ireland more than two thousand years ago. The term Celtic denotes a group of Indo-European languages. But we transferred the name to the people who spoke these languages. Before 500 B.C. the Celts had come to be known in an area comprising Bavaria, Switzerland, Austria, Hungary and Bohemia.