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 and the Basques are two different cultures, each with distinct languages. But genetically, they are related. Haplogroup R1b1a2 is found in both groups. The frequency is about 70% in Spain and 60% in France.ELSH and Irishmen are genetic blood-brothers of the Basque people, according to a study published today. The findings provide the first direct evidence of a close relationship between the people thought of as Celts and the Basques.