Home Schooling

Classifying humans within the tree of life Placental mammals Monotremata Marsupials Carnivore - meat eating, large canines, whiskers Rodent Bats Primates - fingers and thumbs Hooved animals Whales and dolphin Rabbits Anteaters and sloths Elephant Seals & sea lions Tailed Primates = monkeys and lemurs Non-tailed Primates = Apes = chimpanzees, gorilla, orangutan, and bonobos Lactose tolerance Going back in time, the last great notable adaptation in human kind was lactose tolerance. 9,000 to 7,000 years ago in modern day Iran, people first tried drinking cow's milk. Nowadays lactose tolerance is geographically distributed. 99% of people in Asia are lactose intolerant where as 90% of Europeans have tolerance. https://youtu.be/ecZbhf96W9k Neanderthals Neanderthals were a subspecies of human that lived in Europe 40,000 years ago. They were shorter and stocky with a low bow and bigger noses than modern humans. Neanderth...

Whales, dolphins, manatees, seals, sea lions, sea otters and walrus are all ocean living mammals. So why are they considered mammals and not fish? Unlike fish and much like mammals, all of these creatures give birth to live young, the mothers produce milk and the young drink it. As well as that they all have hair and breath oxygen with lungs. They're warm blooded. Their tails move top to bottom whereas most fish move side to side. Many fish including s harks don't have bones, whales do. Why are there mammals in the ocean? Despite being big creatures, or in the case of the blue whale, the biggest to ever live. The oldest baleen whale (filter feeding) ever to be found was 15-20 million years old. On the other hand, the oldest evidence of sharks is 400 million years. Meaning sharks have been around for roughly 20 times as long as baleen whales. DNA testing has been done and it found that whales share the most DNA with hippos. Similarities can be observed as they bo...