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During the Neolithic, the earth's environment became substantially colder.
Q30: A stone tool with chisel-like edges is
Q32: Young apes take longer to reach adulthood
Q38: How did people manage food scarcity during
Q45: James Watson and Francis _ discovered the
Q48: Members of the genus Homo have primarily
Q80: Collection of wild foods complemented hunting during
Q84: Scientists have found that carrying sickle-cell anemia
Q89: The most important symbolic aspect of culture
Q98: The only kind of test that can
Q117: Most primatologists see the differences between humans