| key concept1.1Living Organisms Share Similarities and a Common Origin
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| Life arose from non-life via chemical evolution
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| Cellular structure evolved in the common ancestor of life
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| Photosynthesis allows some organisms to capture energy from the sun
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| Biological information is stored in a genetic code common to all organisms
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| Populations of all living organisms evolve
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| Biologists trace the evolutionary tree of life
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| Cellular differentiation and specialization underlie multicellular life
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| Organisms extract energy and raw materials from the environment
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| Living organisms must regulate their internal environment
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| Living organisms interact
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| key concept1.2Biologists Investigate Life through Experiments That Test Hypotheses
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| Observing and quantifying are important skills
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| Scientific methods combine observation, experimentation, and logic
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| Good experiments have the potential to falsify hypotheses
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| Statistical methods are essential scientific tools
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| Discoveries in biology can be generalized
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| Not all forms of inquiry are scientific
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| key concept1.3Understanding Biology Is Important for Health, Well-Being, and Public-Policy Decisions
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| Modern agriculture depends on biology
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| Biology is the basis of medical practice
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| Biology can inform public policy
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| Biology is crucial for understanding ecosystems
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| Biodiversity helps us understand, enjoy, and appreciate our world
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| Apply What Youâve Learned
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