how do beak shape and size of Galapagos finches provide basis for natural selection ?

Question

anonymous · Answer

hey just give all the questions in one post...

Beek size = nut size (nuts as in food seeds)

bigger beak = certain nut 
small = certain nut

anonymous · Answer

if you have a text book or worksheet look its quite easy to find size

anonymous · Answer

anything else?

anonymous · Answer

how does speciation occur ?

anonymous · Answer

Seperation from others for the finches certain ones were better for certain places and they lived

who wasnt good died

anonymous · Answer

For general if they are seperated and good for the enviroment at hand they live better and reproduce better

anonymous · Answer

what is genetic drift ??