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BIOLOGY 3 -
Bio 3 ch 1-handout
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8/25/20111In life’s hierarchy of organization, new properties emerge at each level Continuing down the hierarchy of life8/25/20112Living organisms interact with their environments, exchanging matter and energyCells are the structural and functional units of lifeThe unity of life: all forms of life have common features8/25/20113The diversity of life can be arranged into three domainsEvolution explains the unity and diversity of life• Observation 1: Individual variation• Observation 2: Overproduction of offspring• Inference 1: Unequal reproductive success • Inference 2: Over time, favorable traits accumulate in a population8/25/20114An example of natural selection in actionScientist use two main approaches to learn about
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