Question

why knives has sharp edge and camels have padded feet​

Answer 1

Those features help them walk across desert sands. So that they are able to walk across sand without sinking in. To spread their weight out over the sand, which helps to prevent them from sinking in to it. Camels are adapted to walk long distances in deserts, hence, they have evolved to form large, broad, flat feet.

knives have sharp edge bcz when the area is less then the pressure is more