evolution

• charles darwin

  • natural selection
  • concluded that most organisms with the most suitable characteristics would survive and be successful competitors
  • succesful organisms would survive and reproduce and pass on best genes to offspring
• speciation

  • development of a new species
  • happens when the same species changes enough to become reproductively isolated
• Variation leads to survival of the fittest since the variations in certain organisms allow that organism to have an advantage over the others in its species in that area