delinquent noun [C]. âº a âperson, usually âyoung, who âbehaves in a way that is âillegal or not âacceptable to most âpeople: âjuvenile delinquents.
Sahelanthropus may have walked on two legs. The oldest evidence for walking on two legs comes from one of the earliest humans known, Sahelanthropus. Walking upright may have helped this species survive in the diverse habitats near where it livedâincluding forests and grasslands.
Here are five reasons humans evolved to walk upright on two feet instead of four, as well as carrying items long distance and gathering from trees. The Bipedalism Hypothesis in Human Evolution Search the site GO