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Chapter 15

Chapter 15. Darwin’s Theory of Evolution. Evolution. “ Change over time ” Process by which modern organisms have descended from ancient organisms. Charles Darwin. Made observations and collected evidence that led him to hypothesize about the way life changed over time.

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Chapter 15

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  1. Chapter 15 Darwin’s Theory of Evolution

  2. Evolution “Change over time” Process by which modern organisms have descended from ancient organisms

  3. Charles Darwin Made observations and collected evidence that led him to hypothesize about the way life changed over time

  4. Voyage of the Beagle

  5. Darwin’s Adventures • Darwin saw plants/animals and took notes • Noted how well they were suited to their specific environment • Had visited similar environments but did not see same species (Example: Argentina and Australia) • Collected Fossils

  6. Galapagos Islands • Close together, but different islands • Smallest were hot dry and barren • Largest greater rainfall

  7. Shape of Shells • Tortoises • Shell shape could determine which island the tortoises inhabited

  8. Birds of Galapagos • Finches • Collected finches and studied their beaks

  9. Which finches could “spear” an insect? Which finches could crack big seeds? Which finches could pry seeds from cactus?

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