A few other mammal taxa, including fruit bats, also lack the ability to make vitamin C. Is the inability to make vitamin C likely homologous or analogous between humans and fruit bats?

Pakicetus is an ancient wolf-like organism that lived 50 million year ago. It had wolf-like ears and nostrils on the front of its skull. Modern whales have a similar ear structure, but their nostrils are on the back of their skull. Aetiocetus lived 25 million years ago, had the same ear structure as both Pakicetus and modern whales, but nostrils in the middle of its skull. According to this information, the most likely conclusion that biologists could draw about the relationship of Aetiocetus to the other organisms is that Aetiocetus...

In “Our Origins” book by Larsen, what has recent research revealed about chimpanzees? A.) some populations use stone tools and cut animal hides B.) they can control their vocalizations with the same brain centers as humans C.) savanna populations sharpen their sticks and hunt galagos

Humans are the only living primates which are primarily bipedal, list possible explanations of why humans became bipedal. How was bipedalism related to the evolutionary needs to survive and reproduce? Which of these explanations (if any) makes the most sense to you?