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Read Ch. 9, section 9.1, How Did Life Originate?
Research a theory about the origin of life on Earth other than the one summarized under Piecing It Together on p. 247 of the text.
Use the following key words and Web sites to assist you with your search:
? Origin of life
? Panspermia theory
? Hydrothermal vent and origin of life
? Prebiotic world
? http://www.chem.duke.edu/~jds/cruise_chem/Exobiology/sites.html
? http://www.talkorigins.org/faqs/abioprob/originoflife.html
Post a 300 word response to the following: Describe and evaluate both the origin of life theory summarized in Piecing It Together on p. 247 and the other theory you researched at the beginning of this CheckPoint. Be skeptical when reviewing the theories. Skepticism is the hallmark of any scientific effort. Ask the following questions about each theory:
? Where is the evidence to support this claim?
? Is there any data on which to base their claim?
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