Evolution Part 2

Evolution Part 2
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  • Yep
  • No! They're digging up Bob's bones...
  • Wait...they left him for so long he became a fossil??
  • Wow, Bob is very old but has the same bone structure as us
  • We iguanas have the same ancestor but adapted to our different environments
  • Natural selection meant that only iguanas with favorable characteristics survived to reproduce.
  • Yes and they kept evolving and adapting so much that there are now 35 different iguana species!
  • Hey it's my cousin! He's a lot smaller than me
  • Yes, there's variations within the same species, caused by recombination of genes, and mutations.
  • Does that mean he will not be able to reproduce because he doesn't have favorable characteristics?
  • Yes that's correct! Also, because he is smaller, it makes it harder for him to catch food. This means it is harder for him to development and mature.
  • That's very sad! At least he has a back bone that will make it harder for predators to eat him. As well as being able to change colours to hide from predators. 
  • That's correct! Although his smaller size means it will be harder for him to fight of predators. Poor cousin....
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