Evolution - Evolution - Scientists work in the...

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Evolution - Scientists work in the “Natural World” - Natural World - facts - facts - observable and verifiable A. Creationism 1. Theory a. Divine being- created all of the world and organisms b. Immutable- species never changed c. No relationship between species, all animals are independent d. Earth is only about 6000 years old 2. Evidence a. Bible- age of the Earth can’t be tested → not fact b. Bible- God created c. Aristotle- 300 B.C.- wrote a book “scala naturae”- book about animals - animals didn’t really change since 300 B.C. d. the flora and fauna of Europe- the plants and animals showed no relationships to other plants and animals in other places B. Evolution 1. Theory a. organisms are related- at 1 st the idea was a gradual branching descent b. natural selection-mechanism for evolution 2. Evolution evidence- Darwin a. Diversity- went to Galapagos islands (1831-1836) on the Beagle b. Biogeography- organisms differed according to some geographical or ecological significant feature - Finches- varied sized beaks
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c. Geology
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- James Hutton - suggests that Earth is older than 6000yrs i. rock layers take long times - gradualism- profound changes take long times and are the result of many small changes d. Fossil record
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- the organisms are no longer existent - modern-day species are not in fossil records - organisms did change - William Smith
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different areas ii. the fossils in deepest rock layers were oldest iii. oldest → farthest from, newest → most like current species e. taxonomy - name organisms - classify organisms i. Domain Kingdoms Phylum f. Comparative Anatomy- comparing structures - homologous- structures are evolutionary relationship, common ancestry i. different because different environmental stresses ii. adaptive radiation, divergent evolution - analogous- structures are similar, but not because of common ancestry. Look alike because of similar environmental stresses . i. convergent evolution
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Evolution - Evolution - Scientists work in the...

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