| A | B |
| pampas | extensive, treeless plains in South America |
| llanos | a treeless grassy plain |
| archipelago | a group of islands |
| Vertical Zonation | temperature and precipitation change with elevation and latitude |
| Tierra Fria | mountain locations where high elevation results in a markedly cooler climate than that encountered in the lowlands at a comparable latitude. |
| Tierra Templada | located in the tropics at a moderately high elevation or are marginally outside the astronomical tropics, producing a somewhat cooler overall climate than that found in the tropical lowlands, |
| Tierra Caliente | low-lying tropical land usually below 2000 feet with continuous hot weather |
| Hacienda | a large estate or plantation with a dwelling house. |
| Gaucho | a cowboy of the South American pampas. |
| deforestation | clearcutting or clearing is the removal of a forest or stand of trees from land which is then converted to a non-forest use |
| mestizo | a man of mixed race, especially one having Spanish and indigenous descent |
| megacity | a very large city, typically one with a population of over ten million people |
| ejido | a piece of land farmed communally under a system supported by the state. |
| Maquiladoras | a factory in Mexico run by a foreign company and exporting its products to the country of that company. |
| sustainable development | economic development that is conducted without depletion of natural resources. |
| biodiversity | the variety of life in the world or in a particular habitat or ecosystem. |