Description: Brazil is the largest country in South America and in the Southern Hemisphere. It’s slightly smaller than the US and shares common boundaries with every South American country except Chile and Ecuador. The terrain in mostly flat to rolling lowlands in north, some plains, hills, mountains, and a narrow coastal belt. The climate is mostly tropical, but temperate in the south. Natural hazards are recurring droughts in northeast; floods and occasional frost in the south. Deforestation in Amazon Basin destroys the habitat and endangers a multitude of plant and animal species indigenous to the area; there is lucrative illegal wildlife trade; air and water pollution in Rio de Janeiro, Sao Paulo, and several other large cities; land degradation and water pollution caused by improper mining activities; wetland degradation; severe oil spills.