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Key Questions:

1. How did Charles Darwin come up with the theory of evolution by natural selection?
   • Charles Darwin, as a result of observations on a round the world expedition, backed by years of experimentation and discussion and linked to developing knowledge of geology and fossils, proposed the theory of evolution by natural selection.
2. What does the theory of eveolution by natural selection involve?
   • Theory of evolution by natural selection invovles: ? Individual organisms within a particular species show a wide range of variation for a characteristic. ? Individuals with characteristics most suited to the environment are more likely to survive to breed successfully. ? The characteristics that have enabled these individuals to survive are then passed on to the next generation.
3. What lead to the development of the theory of evolution by natural selection?
   • The theory of evolution by natural selection was developed over time and from information gathered by many scientists and he development of the social climate at the time.
4. What was the name of the book that Charles Darwin published his ideas in andwere people happy with it?
   • Darwin published his ideas in On the Origin of Species (1859). There was much controversy surrounding these revolutionary new ideas.
5. Why did it take a long time for the theory of evolution by natural selection to be accepted?
   • The theory of evolution by natural selection was only gradually accepted because: ? the theory challenged the idea that Ood made all the animals and plants that live on Earth ? there was insufficient evidence at the time the theory was published to convince many scientists ? the mechanism of inheritance and variation was not known until 50 years after the theory was published.