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| observation of autralopithecines shin bones indiate that these organisms walked upright |
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| these bacteria were termed "germs" and are simply called bacteria |
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| allele frequencies change due to random events |
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| the pattern of evolution that is usualy a response to different habitats |
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| disease causeing agent that enters the body, like a virus or a bacteria |
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| ourfirst line of defense which serves as a physical barrier to pathogens,uses oils, sweat, and waxes to provide a strong barrier agenst external environments |
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| an organ that no longer has a known function |
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| the idea that large muscles may be passed on to offspring because the parents have them |
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| organisms that use sunlight to male carbohydrates |
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| translates as "handy man" fossil remains were found with stone tools |
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