In the evolution of human beings,how long ago did we go from being quadrupeds (walking on four legs)to bipeds (walking on two legs)?
A) Approximately 100 billion years ago
B) Approximately 50 million years ago
C) Between 5 and 10 million years ago
D) Between 1 and 2 million years ago

Question

Quizplus · Accepted Answer

The transition from quadrupedalism to bipedalism in human ancestors is believed to have occurred between 5 and 10 million years ago. This shift is a key feature distinguishing early hominins from other primates.

In the Evolution of Human Beings,how Long Ago Did We