| A | B |
| succulent | a type of plant that has thick, fleshy leaves that can conserve moisture |
| gorge | A canyon like, steep-sided valley formed when a river cuts through the land that is being lifted upward |
| savanna | a broad grassland in the tropics with few trees |
| drought | a long period of time without rainfall |
| deforestation | cutting down forests without planting new trees |
| rain forest | Dense sand of trees and other growth tha receives hight amounts of precipitation each year |
| canopy | An umbrella like covering formed by tops of the trees in a rainforest |
| escarpment | A steep cliff at the edge of a plateau with a lowland area below |
| rift valley | An area of low relief flanked by highland regions that is formed by the moving apart of two of the Earth's tectonic plates |
| ecotourism | a type of tourism in which people visit a country to enjoy its natural wonders |
| desertification | the process by which dry areas turn into deserts |
| industrial diamond | a diamond used to make drills, saws or grinding tools to process other materials rather than as a gemstone |