BS 110 Notes 9-20-2010

BS 110 Notes 9-20-2010 - BS 110 Notes I deas on How Species...

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BS 110 Notes 9-20-2010 Ideas on How Species and the Earth Changed Aristotle (384-322 BC) – Scala Naturae -- Invisible ladder of nature – simplest species at the bottom of the ladder and the most complex at the top of the ladder; believed indivuals could change and move up the ladder Hutton – Theory of uniformitarianism (Theory of gradualism) – earth’s surface is continually changing by forces that always occur; earth was over 6000 years old; argued against idea of catastrophism – earth shaped by 3-4 major catastrophes, and the last one was the Great Flood Lamarck (1744-1829) o Ladder of nature o Void of organisms at the bottom of the ladder was filled by organisms formed by spontaneous generation o Organisms strive to adapt to altered conditions o Changed in characteristics by use and disuse o Inheritance of acquired characteristics Charles Darwin – family was independently wealthy, degree in theology, amateur geologist, collected insects, good at drawing, liked to go to the pub;
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BS 110 Notes 9-20-2010 - BS 110 Notes I deas on How Species...

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