s11074739
s11074739
02.08.2019 • 
Biology

An ecosystem contains two types of giraffes, some with short necks and others with long necks. the distribution of this trait is equal among the population. a disease causes low-lying shrubs to die out. the long-necked giraffes can access more food, so they have a better chance of surviving to reproductive age. after several generations, all the giraffes ha

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