Anthropologist are not completely sure as to why there was an evolutionary change. With the acceptance of environment relation, it helps narrow down what could have happened however, there are no clear answers or hypotheses to bipedalism. The hypotheses for the reason why there was an evolution to bipedalism are; Locomotor efficiency, Thermoregulation, Free of the hands, and Visual surveillance.
Locomotor Efficiency Locomotor …show more content…
Quadapedal animals such as apes, use tools and they carry around their offspring by making the offspring holding on to them. Apes also use tools such as sticks to retrieve insects such as acts from the ground and use stones to break open shells of nuts to get the eatable nut inside, yet they do not walk on two limbs all the time. They can walk on two limbs for a short distance but the rest of the times they knuckle-walk. The use of tools and the carrying of tools has no affect them in making them change how they