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At the beginning, all giraffes had short neck. It wasn't a problem because there were plants to eat for everyone
Mmm there are lots of trees and plants to eat
But over time the food became rare and there were no plants to eat for the giraffes. All the leaves were too high.
Oh no, the trees are too high and there is nothing else to eat
Then a giraffe with a long neck appeared and he could eat all the leaves high up. Because there was nothing to eat for the low neck giraffes, they died starving.
Fortunately I am tall so I can eat the leaves high up. Poor little ones they will starve
So all the long necked giraffes survived and that's what we call the natural selection
We are the winners of the evolution
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