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.
The walking stickâs ability to camouflage is its best defense against predators. To avoid being seen, walking sticks often feed at night and remain motionless during the day. If they encounter a predator, walking sticks extend their front legs straight out past their heads and remain completely motionless to help them blend in with the branch they are standing on.