Question

how does an adaptation develops?

Answer 1

living in a place for a prolonged period makes ourselves used to the environment even it is not abiding to our will in the begining but slowly becomes acceptable

Answer 2

It doesn't have a fixed time or a period as it is the thing which develops when a organism is not able to survive in the climate or the surrounding where it lives.. sometimes it is behavioural adaptation or sometimes it is physical adaptation.. it depends on the need of an organism.. it occurs from from generation to generation so it takes a long time you can take the example of a Giraffe...