AP Bio

AP Bio
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  • How the Earth came about....
  • It is believed that the Earth had a toxic environment; the evidence showed that no life could be supported. 
  • The big gray ball shown below, is exactly what the Earth would have looked like 4.6 BYA, it was cooling the molten to rock which means it was too severe for any life.  
  • Scientists believe that from the fossils bacteria was the first organisms on Earth. The monomers and polymers were the many building blocks to what life is today.  
  • Scientists are reasoned to believe that RNA was the earliest genetic material, which was the main source of replication in organisms. 
  • The organisms today all derive from common ancestor or an origin of species. The species have similar genetic codes, which consists of amino acids and DNA sequences.  
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