Giraffes with long necks had more healthy offspring.
Short necked giraffes did not have offspring because since it had a short neck it could not reach the trees to eat food which meant that it dies and does not have the opportunity.
Long necked giraffes survived more and had alot of offspring .
Short necked giraffes did not have offspring's and more long necked had lots of offspring's so then there started to be more long necked giraffes then short necked ones
Then at the end there were only long necked giraffes.
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