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.
Either of those habits can strain your digestive system, and here is the major reason to stay in an upright position after eating. It prevents heartburn, or acid reflux, which can sometimes escalate into gastroesophageal reflux disease or GERD.