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Topic: Science
Number of pages / Number of words: 2 / 546
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Spontaneous changes called mutations, which occur in the genes. Mutations may occur on rare occasions by chance, as a result of irradiation or as a result of exposure to certain chemicals.

In terms of Darwin's Theory there are no species of short-necked giraffes now, because even though there might have been long ago, due to giraffes needed to reach higher to eat the greens off trees maybe because there was no grass left...


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And so only the ones with long necks survived, and the short-necked giraffes died out.

A small proportion of each generation in most species survives only long enough to produce offspring as most of them die due to natural selection. The majority of the population of most species dies out because they have characteristics disused and unnecessary for their environment...


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Although New England and the Chesapeake Region were both settled by people of English origin, by 1700 the regions had evolved into two distinct societies. Why did this difference in development occur? Although New England and the Chesapeake region were both settles largely by people of English origin, by 1700 the regions had evolved into two distinct societies. Why did this development occur? as a result of klu klux klan Salem: A result of Good Or Evil? Problems that occur with performance reviews Analyse the dramatic uses of the Chorus in Greek tragedy; in what ways do traces of the choric function occur in twentieth-century drama? King Lear - Act 1 - What changes occur as a result of Lear's actions to his court and family? The Art and Result of Communication The Unexpected Result The Result of the Treaty of Versailles Dying As A Result Of Fraternity Hazing Paternal Age and Increased Risk of Schizophrenia, Providing Evidence for De Novo Mutations Founder Mutations Mutations - Review The Effects Of HIV Mutations On The Immune System

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