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Charles Darwin studied life sciences in the mid to late 19th century, and his theory of how evolution progressed was based on natural selection. Through the study of life sciences, Darwin saw that over long periods of time, through the process of evolution, certain species and traits would continue to progress and reproduce while others would die off, not allowing their traits to be passed onto following generations.

Darwin saw this process as a natural selection, where whichever living organism that was able to adapt favorably to changing environments or conditions would be selected to continue to reproduce, passing on its favorable traits to the next generation.

If a living organism had unfavorable traits (for example- short legs, small eyes, or a genetic disorder) which prevented it from living successfully (acquiring nourishment and defending itself) then it would most likely die and not produce offspring with the same deficient characteristics. These being the species or traits NOT selected to continue.

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14y ago
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13y ago

In the introduction of Charles Darwin's book On the Origing of Species, he explains his theory: "As many more individuals of each species are born than can possibly survive; and as, consequently, there is a frequently recurring struggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving, and thus be naturally selected. From the strong principle of inheritance, any selected variety will tend to propagate its new and modified form."

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15y ago

"This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or Survival of the "Fittest."

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12y ago

It means that an organism that is more fit to the enviorment will live longer and reproduce until the species that is not as fit for the enviorment is gone.

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Q: What is Darwin's definition of 'natural selection'?
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