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Question is about theory of evolution by natural selection.
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Now natural selection, this theory, which is best explained by darwin, and this theory also known as darwinism.
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Now next thing, what is evolution? evolution is actually slow and gradual changes.
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And these changes occurs in organism.
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Why this changes occurs in organism to strengthen.
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Fit to fit in the new environment.
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So these changes might be beneficial or these might be harmful.
01:00
But if these changes are beneficial at that time one special word it is used for beneficial changes that is a adaptation.
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This adaptation helps to survive those organisms in new and natural environment.
01:17
So this is first step that is a variation because.
01:21
Because of variation only adaptation takes place, this adaptation make changes in organism and those changes according to fit that particular environment.
01:39
So changes in organism which is known as a variation.
01:48
Now when variation takes place, second step we can jump on overproduction because adaptation, it makes favorable conditions.
01:57
This adaptation make favorable condition for those organisms to fit in that environment.
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So overproduction take place of those organisms.
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This is first step.
02:10
Next second step we can call as over production because favorable condition make these organisms to reproduce more...