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 a European cultural group first evident in the 7th or 8th century B.C. The Romans called them Galli and the Greeks called them Keltoi-- both meaning barbarians. Their maximum expansion was in the 3rd to 5th century B.C., when they occupied much of Europe north of the Alps (see maps).he Celts were a European cultural group first evident in the 7th or 8th century B.C. The Romans called them Galli and the Greeks called them Keltoi-- both meaning barbarians. Their maximum expansion was in the 3rd to 5th century B.C., when they occupied much of Europe north of the Alps (see maps).