Hominids adapted to life on the ground approximately _______ years ago.

Question

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Hominids, or the family of great apes including humans, began to adapt to life on the ground around 5-7 million years ago through a process of bipedalism, or walking on two legs. A) 3.5 billion is the age of the Earth, not when hominids adapted to life on the ground. B) 130 thousand is the time period when anatomically modern humans first appeared, well after the transition to bipedalism. C) 600 million is the time period of the earliest complex multicellular organisms, long before the emergence of hominids.

Hominids Adapted to Life on the Ground Approximately _______ Years