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Unformatted text preview: catalog his collections and ponder the seeming "fit" of organisms to their mode of existence. He eventually settled on four main points of the theory. 1. Adaptation : all organisms adapt to their environments. 2. Variation: all organisms are variable in their traits. 3. Over-reproduction: all organisms tend to reproduce beyond their environment's capacity to support them (this is based on the work of Thomas Malthus , who studied how populations of organisms tended to grow geometrically until they encountered a limit on their population size). 4. Since not all organisms are equally well adapted to their environment, some will survive and reproduce better than others -- this is known as natural selection . Sometimes this is also referred to as "survival of the fittest". In reality this merely deals with the reproductive success of the organisms, not solely their relative strength or speed. Adaptations of various organisms to their environments:...
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