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Fossils?

How about fossils?
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How about fossils?

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HOMOLOGOUS STRUCTURES

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ANALOGOUS STRUCTURES

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Learning goals 
  • You can describe what a fossil is.
  • You can explain how fossils are formed and distinguish the different steps of the process.
  • You can explain how fossils help biologists to argue how life on earth has developed.
  • You can explain what an index fossil is and how it helps palaeontologists in determining the age of a geological layer.

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index fossils
fossils are found in a specific layer, of which we know how old it is
some fossils are found a lot in a specific layer. If you find a different fossil next to it, it's probably about the same age

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Homework

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