El Niño – n. a flow of unusually warm water along the western coast of South America that causes many changes in weather in other places
drought – n. a long period of time during which there is very little or no rain
irrigation – n. to supply land with water by using artificial means
encourage – v. to tell or advise (someone) to do something
conservation – n. the careful use of natural resources to prevent them from being lost or wasted
dormant – adj. not active but able to become active