Relacionar Columnas Unit 9Versión en línea Our planet por Nataly Mollinedo 1 A ridge of rocks or sand just under the water. 2 A chemical substance found in coal, oil, and gas. 3 A large piece of ice that moves slowly down a mountain. 4 A large amount of water that covers an area that is usually dry 5 The Maldives are very low lying 6 a long period of dry weather