arizona
your but go to Google idiot
Brazils natural boudaries are mountains, lakes, rivers, and the ocean.
Drinking water, transport, hydro-electric, fishing, waste disposal, irrigation etc.
The Amazon river is Brazils largest river.
list the main rivers
Go to a World Atlas online or in a book. They list all the rivers. There are too many to list on this site.
800,000,000
Australia
Trees
football
Portuguese