| A | B |
|---|
| Panama Canal | a shipping coanal across the Isthmus of Panama, linking the Atlantic to the Pacific |
| lock | section of waterway in which ships are lowered by adjusting the water level |
| Canal Zone | 10-mile strip of land along the Panama Canal |
| ecotourism | travel to unspoiled areas in order to learn about the environment |
| canopy | dense mass of leaves and branches that form the top layer of a rain forest |
| Amazon Rain Forest | large tropical rain forest occupying the Amazon Basin in South America |
| Rio de Janeiro | a large city in Brazil |
| Brasilia | Brazil's NEW capital city |
| savanna | a flat, grassy region or plain |
| constitution | a statement of a country's basic laws and values |
| citizen | a person with certain rights and responsibilities under a particular government |
| commonwealth | a self-governing political unit that has strong ties to a particular country |
