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: There is variation within a species, creatures of the same species don't look exactly the same as each other.
: '''Variation''' is useful to help a species survive. If everyone was the same, what kills one person might kill everyone.
: '''Variation''' within a [[species]] can be [[Inheritance|inherited]] or caused by the environmental. Some people are born with 3 fingers (inherited variation) but others might lose fingers in an accident (environmental variation).
===Examplesof Inherited Variation===
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