You may need to see a doctor if a. you occasionally go to bed late b. you occasionally wake up in the middle of the night c. you often feel well rested after a full night's sleep d. you often wake up feeling like you haven't been asleep

Australopithecus robustus was likely the longest-surviving species of australopithecine in south africa. it had: a. large molars, a big face, and a sagittal crest. b. a large body, large teeth, and a sagittal crest. c. a big brain, big teeth, and a big face. d. a big face, large teeth, and a large body