Adaptation and Evolution

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  • Adaptation
    • Explaining development of different species
      • Mention isolation/ separation/ splitting
        • By geographical barrier.
      • Different alleles in the species that were separated.
      • Different conditions: climate; predators; food
      • Therefore natural selection occurred.
    • Why scientists are uncertain about how life started on earth
      • There is a lack of evidence
        • Because early organisms had soft bodies therefore were decomposed quite quickly.
  • How Fossils provide evidence of evolution
    • Adaptation
      • Explaining development of different species
        • Mention isolation/ separation/ splitting
          • By geographical barrier.
        • Different alleles in the species that were separated.
        • Different conditions: climate; predators; food
        • Therefore natural selection occurred.
      • Why scientists are uncertain about how life started on earth
        • There is a lack of evidence
          • Because early organisms had soft bodies therefore were decomposed quite quickly.
    • 1. Fossils are remains of organisms that lived a long time ago.
    • 2. Fossils show the changes over time.
    • 3. Fossils have similar features to modern day animals
  • So the DIFFERENCE meant that the species were unable to interbreed.

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