Biology Chapter 10 Test 10.1

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early ideas about evolution
Molly 21Marshall
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Molly 21Marshall
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Biology Chapter 10 Test 10.1
  1. Cardus Linnaeus
    1. developed classification system for all types of organisms known at the time
      1. method still used today
      2. reflected evolutionary relatioships
        1. abandoned common belief of time that organisms were fixed and did not change
          1. some might have arisen through hybridization
            1. crossing that he could observe through experiments with varieties, or species, of plants
        2. George Louis Leclerc de Buffon
          1. challenged many of accepted ideas
            1. Earth was NOT only 6,000 years old
              1. Earth was much older that this
          2. Erasmus Darwin
            1. all living things were descended from a common ancestor
              1. more complex forms of life arose from less-complex organisms
                1. idea was expanded upon 65 years later by is grandson, Charles Darwin
                2. Jean Baptiste Lamarck
                  1. all organisms evolved toward perfection and complxity
                    1. didn't think that species did not become extinct
                      1. reasoned they must have evolved into different forms
                    2. Catastrophism
                      1. natural disasters have happened often during Earth's long history
                        1. shaped land forms and caused species to become extinct in the process
                          1. floods, volcanic eruptions, earthquakes, etc....
                          2. Gradualism
                            1. proposed by James Hutton in the late 1700s
                              1. changes observed in land forms result from slow changes over a long period of time
                                1. canyons carved away by rivers
                                2. Uniformitarianism
                                  1. proposed by Charles Lyell
                                    1. Principles of Geology published in 1830s
                                      1. expanded Hutton's theory of gradualism
                                      2. geologic processes that shape Earth are uniform through time
                                        1. combined Lyell's and Hutton's observations
                                        2. layers of rock in Earth's surface
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