Evolution

Evolution
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  • Today's lesson will be discussing the major stages in human evolution.
  • To start off, let's discuss about our last universal common ancestor. 
  • So our last universal common ancestor emerged 3.8 billion years ago. As you can see in this image the LUCA connected to all of the organisms.
  • During the Cambrian period, plants have evolved from water to land due to the adaptation that allowed them to survive in ponds and pools that have occasionally dried up. 
  • The first signs of animals walking on land appeared about 430 million years ago.  Animals have evolved from the remainder of lobed finned fishes. Overtime, lobed fin fishes have grown limbs which has caused them to travel to land where it creates the animals you see today. 
  • Primates can be traced back 65 million years ago. The first primate-like mammals had the appearance of shrews or squirrels.  They were also adapted to the moist climate environment.
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