Precipitation in the tundra totals 150 to 250 mm a year, including melted snow. That's less than most of the world's greatest deserts! Still, the tundra is usually a wet place because the low temperatures cause evaporation of water to be slow.
In this period, Brazil came back to the two party political system. With the return of democracy, in 1986, and the establishment of the 1988 Constitution, the multiparty political system was set back and several parties were founded.
For political administration, Brazil's 26 statesand the Federal District (Distrito Federal, BrasÃ­lia)are divided into five different regions. The name of each of the Brazilian states below is preceded by its commonly used two letter abbreviation.