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 main causes of deforestation of the Amazon rainforest are human settlement and development of the land. In the nine years from 1991 to 2000, the area of Amazon rainforest cleared rose from 415,000 to 587,000 km 2 (160,000 to 227,000 sq mi), comparable to the total land area of Spain, Madagascar or Manitoba.urthermore, âas a result of deforestation, only 2.4 million square miles remainâ of the original 6 million acres that once covered the earth (Rainforest Concern). Cattle ranching is responsible for 91% of the destruction in tropical rainforests, with over 136 million acres of land cleared for cattle grazing (PETA).