Chapter 29 Mount Everest: Climbing the World's Tallest Physical Feature

UNESCO

a branch of the United Nations. UNESCO stands for United Nations Educational, Scientific, and Cultural Organization.

World Heritage site

a place of great natural or cultural value that has been placed on UNESCO's World Heritage List. UNESCO helps countries preserve these sites for future generations.

developing country

a poorer country with a less advanced economy. In general, developing countries are trying to increase their industries and improve life for their people.

deforestation

removing or clearing away the trees from a forest. Deforestation is often done to clear land for farming or ranching.

exposure

the harmful effects of cold, wind, or other extreme weather conditions

carrying capacity

the number of people or animals the environment of an area can support. A place's carrying capacity depends on the environment.

acclimatize

the process of adjusting to lower oxygen levels at high elevation. Climbers adjust through exercise and rest as they gradually move higher.

avalanche

the sudden movement of a large mass of ice, snow, or rocks and soil down the side of a mountain

tourism

travel for pleasure rather than business or necessity; also, the business of organizing such travel