The issue of safety in the classroom is rarely considered at such a foundational level. Considering that a participant on a playground can break a leg, or worse, safety occupies a central role in a designerâs thinking.
The Amazon basin is the largest drainage basin in the world, about 7,050,000 square kilometres (2,720,000 sq mi), and accounts for approximately one-fifth of the world's total river flow.he Amazon River and its tributaries are characterized by extensive forested areas that become flooded every rainy season. Every year, the river rises more than 9 metres (30 ft), flooding the surrounding forests, known as varzea (vÃ¡rzea flooded). forests
The Amazon River basin is about 4,195 miles long, covering about 2,720,000 square miles in area, including its 15,000 tributaries and subtributaries (four of which are in excess of 1,000 miles long).It is the largest river basin in the world. The source of the Amazon is the lake, Lauricocha, in the Peruvian Andes.he width of the river ranges from one mile to 35 miles. The city at the heart of the basin, Manaus, has an altitude of only 144 feet. The average level of the basin is 300 feet above sea level. In the Amazon Basin, flooding often occurs between June and October.