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
Amazon River, Peru and Brazil. The Amazon River is the world's second longest river (the Nile River in Africa is the longest). It runs for about 3,900 miles (6,275 kilometers) from the Andes Mountains in northern Peru to the Atlantic Ocean near Belem, Brazil.he sides of the channel are known as the stream's banks. The bottom is the stream bed. A stream's velocity, or speed, determines its ability to erode, transport, and deposit sediment. Sediment is rock debris such as clay, silt, sand, gravel, or even larger material.