(b) Are all variations beneficial to a species?
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Variations are important for species survival because variation causes the organism to overcome extreme situations. Organism species occupy well-defined positions in the ecosystem, utilizing their reproductive capacity.
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No ,the variation may be beneficial or harmful for a species , but survival of the fittest leads to elimination of organism with harmful variations and continuance of those with variation which may help them to survive under changed environmentmental conditions , thus the surviving members will carry on useful variations only .
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