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.
About 2000 years before Christ, the prehistoric inhabitants of the British islands (pre-Celtic people) were the dark-haired Iberians (Bronze Age and Iron Age). They built Stonehenge in the south of England, on Salisbury plain, a group of huge blue stone slabs placed in concentric circles. The Celts (700 B.C. - 43 A.D.) Around 700 B.C. the blond-haired Celts began to arrive from Northern Europe (Germany) ( at the beginning there were the Gaels - in the North - and then the Brythons - in the South-West and West - in the fourth century).