question 6 : describe Darwin's theory of evolution.
( answer according to class 10th)
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Darwin’s editing was both substantive and significant.
Perhaps the best-known change was Darwin’s use of the phrase ‘‘the survival of the fittest.’’ Although the idea is associated with Darwin and the theory of evolution, he did not use this phrase in the first edition. Commenting on the survival of some species in the ‘‘struggle for existence,’’ Darwin writes, ‘‘This preservation of favourable varia- tions and the rejection of injurious variations, I call Natural Selec- tion.’’17 After not being able to explain to some of his critics how and why natural selection worked, Darwin wrote in the fifth edition, ‘‘This preservation of favourable variations, and the destruction of in- jurious variations, I call Natural Selection, or the Survival of the Fit- test.’’18 And Darwin expanded the explanation still further in the sixth edition: ‘‘This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest.’
Perhaps the best-known change was Darwin’s use of the phrase ‘‘the survival of the fittest.’’ Although the idea is associated with Darwin and the theory of evolution, he did not use this phrase in the first edition. Commenting on the survival of some species in the ‘‘struggle for existence,’’ Darwin writes, ‘‘This preservation of favourable varia- tions and the rejection of injurious variations, I call Natural Selec- tion.’’17 After not being able to explain to some of his critics how and why natural selection worked, Darwin wrote in the fifth edition, ‘‘This preservation of favourable variations, and the destruction of in- jurious variations, I call Natural Selection, or the Survival of the Fit- test.’’18 And Darwin expanded the explanation still further in the sixth edition: ‘‘This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest.’
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