| A | B |
| Andes | longest mountain range in the world |
| Amazon River | longest river in the western hemisphere, largest water volume |
| Amazon Rainforest | largest rainforest in the world |
| pampas | a fertile area for grazing cattle and growing crops |
| Atacama Desert | one of the driest desert in the world, located on the leeward side of the Andes |
| rainforest | abundant rainfall, dense vegetation, diverse ecosystem |
| chinampas | floating gardens used by the Aztecs to grow crops |
| rainforest and mountains | physical barriers that isolate cultures |
| Panama Canal | changed global trade by decreasing the |
| rain shadow | caused by cold ocean current & mountains |
| cash crops | commercial farming that exports their products |
| traditional economic system | traditional economy |
| free-enterprise | market economy |
| communism | command economy |
| socialism | mixed economy |
| maquiladoras | foreign factories built in Mexico |
| regionalism | isolated areas that generally have traditional lifestyles |
| El Nino | the warming of the Pacific Ocean |
| La Nina | the cooling of the Pacific Ocean |
| tropical savanna | a grassland |