When it evaporates, the surroundings are cooled; as it condenses, water releases energy and warms its surroundings. Water sculpts landforms through erosion and the movement of minerals; it hydrates life on the planet, and plays a role in the transfer of energy from terrestrial to aquatic systems. Energy from the sun drives the cycling of matter in Earth's spheres and in the many ecosystems within those spheres. Producers use only about one percent of the sun's energy that enters Earth's atmosphere.