Climate change Nguyễn Thị Quỳnh Anh Vocabulary Permafrost: an area of land that is permanently frozen below the surface water vapor: water in the form of a gas resulting from heating water or ice Nuclear: being or using the power produced when the nucleus of an atom is divided or joined to another nucleus Mudslide: a large amount of wet dirt that moves down a hill or mountain and that can cause a lot of death and destruction Geopolitical: connected with political activity as influenced by the physical features of a country or area, or with the study of the way a country's size, position, etc. influence its power and its relationships with other countries