Why do hurricanes rotate counterclockwise in the northern hemisphere

A hurricane's spin and the spin's direction is determined by a super-powerful phenomenon called the Coriolis effect. It causes the path of everything from particles in the air to currents in the ocean so they curve as they travel across and over Earth's surfaces.

ill do it for 100, also this isnt 80 its 40

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;