If the Earth didn't rotate, winds would travel north or south because of the differences in pressure and temperature. The Earth does rotate, so, the Coriolis Effect diverts the wind to the left of the Southern Hemisphere and right of the Northern Hemisphere. The Coriolis Effect is very important because it creates cyclonic weather system.s
The most likely cause of the beak variation is the food source of the finch, the break size and shape was adapted to most likely have easier and better access to food. <span />
