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.
Ancient tribes now thought to be Celtic include the Helvetii, who lived in the area of modern Switzerland, the Boii in modern Italy, the Averni in modern France, the Scordisci in modern Serbia, and the Belgae, who inhabited northern Gaul and southern Britain in immediate pre-Roman times. However.