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.
Celts originated in central Europe not Ireland.They word Celt comes from the Greek word keltoi. ANOTHER ANSWER: The Celts of Britain and Ireland are descended from Post-Ice Age settler from Northern Spain, especially the Basque country. This is indicated by the Y-chromosome studies of the past sveral years. Ireland.