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04_Natural_Selection_I - Evolution Todaysquestion...

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Evolution by Natural Selection Today’s question: Where do species come from, and how have they come to be so well adapted to their i t ? environments?
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Evolution by natural selection “… a naturalist, reflecting on the mutual affinities of organic beings, on their embryological relations, their geographical distribution, geological succession, and other such facts might come to the conclusion that other such facts, might come to the conclusion that each species had not been independently created, but had descended … from other species. Nevertheless, such a conclusion … would be unsatisfactory, until it could be shown HOW the innumerable species inhabiting this world have been modified …”
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Evolution by natural selection: The process Darwin’s four postulates explain why natural selection occurs 1. Individuals within populations are occurs. 2. Some of these variations are 3 Not all individuals produce the 3. Not all individuals produce the 4. Individuals with certain heritable traits
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