Tributary {Ans: A small river that joins a larger one.}Housing tenure {Ans: the legal and financial arrangements by which people live in their housing}deforestation {Ans: The cutting down or burning of trees}Distributaries {Ans: finger-like river channels which branch away from a main river channel in a delta}Flow {Ans: When water is moving in the water cycle}Mouth {Ans: The point where a river meets the sea.}store {Ans: A place where something remains for a period of time (for example, within the water cycle or carbon cycle)}suspension {Ans: A process in which rock material is carried 'floating' in the water}Commerce {Ans: Office}Upper course {Ans: The highest stage of a river near to its source. Characterised by large boulders and turbulent water.}Overgrazing {Ans: The destruction of vegetation by putting too many animals on the land for too long}Groundwater {Ans: water in the ground below the water table}GNP (Gross national product) {Ans: How much a country earns}Throughflow {Ans: the downhill flow of water through soil}Tertiary sector {Ans: providing a service}Surface Storage {Ans: puddles, ponds and lakes are all examples of this store.}Corrosion {Ans: the dissolving in water