Earth is made up of four spheres: the lithosphere, hydrosphere, atmosphere, and biosphere. Changes in any part of the Earth’s system affects all other spheres. For example, storms form in the atmosphere which bring rain. The rain affects the hydrosphere by increasing the amount of water in a river, which affect the flow of the river. Flowing rivers change the surface of the lithosphere. Plants and animals in the biosphere depend on water to survive.