1. - Variation is present in a population, 2. - Breeding populations become isolated., 3.  - Mutation occurs in one or more population, 4. - Environment changes., 5. - A specific mutation is more advantageous in the new environment., 6. - Organisms with the fitter traits survive longer and produce more offspring., 7. - Offspring inherit the fitter, more favourable traits, 8. - Over several generations, a new species is produced.,

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