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.
The government of Brazil is divided into the 1) executive branch, 2) legislative branch and 3) judicial branch. There are 27 states and more than 5 500 individual municipalities, each of which is run by a mayor.