surplus - an extra supply of food, specialization - training to do a particular job, domesticate - an animal or plant that is NOT wild, agriculture - a fancy word for farming, technology - the use of skills and tools to meet practical needs, Leakey - the last name of the husband and wife archaeolgical team, obsisian - glassy, black rock found by volcanoes, neanderthals - known for their strength, civilization - a culture that has developed specialization, religion, learning, and government,

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