| Front | What is natural selection as stated by Darwin? Darwin's 4 important observations: Darwin's conclusions: |
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| Back | -That all species have evolved from basic lifeforms that first developed 3 billion years ago. -organisms often produce lots of offspring -populations usually stay the same size -organisms are all slightly different -characteristics can be inherited -There's a struggle for existence. -More organisms born than can survive -The ones that survive are the ones best suited to enviornment and ones that breed(long necked giraffes) -Passing on their characterists to offspring -Over long time characteristics of species change |
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