What characterizes the geographical method of speciation? Please enter at least three elements

1) There is isolation. Geographical speciation can be carried out in two main ways: by migration; by fragmentation of the range of the maternal species (due to the emergence of external conditions – the formation of mountain ranges, deserts, the descent of the glacier from the mountains).
2) Then reproductive isolation occurs – gene exchange becomes impossible.
In the new conditions, individuals begin to acquire new traits.
3) As a result of natural selection, new, useful for survival traits are passed down from generation to generation, individuals of different ranges are becoming more and more different.

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