Earth is open system with respect to?

Excuse ! extra points plus ! super desperate ! the position of an object does not move relative to a reference point. relative to the reference point the object _. a.) is not moving. b.) is moving.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?