... . As in the prairie of the west, The Native Americans used fire as a tool to keep the forest clear. Over thousands of years the annual burning created an intricate fire dependant ecosystem The ecosystems of South America are as dazzling as those of North America, I would even go so far as to call them amazing. The amount of human conversion in the Amazon is mind blowing, from the fertile ground to the trees in the forest, much ... can be marked by the rise and fall of natural species of an area, within a few years of Columbus's arrival the population of buffalo, elk and deer among others...

• Word Count: 1156
• Approx Pages: 5
• Grade Level: Undergraduate

... degrees Fahrenheit (Amazon 401). It contains a wider variety of plant and animal life than any other place in the world. Tens of thousands of different plant species, 1,500 species of birds, 3,000 species of fish and up to 30 million different species of insects call the Amazon home (Amazon 402), not to mention the wide variety of alligators, anacondas, monkeys, parrots, sloths, and wild species of cat (Amazon 403). A 2.5-acre area may contain ... as many as 280 or more species of trees and hundreds more plant ... ...

• Word Count: 1233
• Approx Pages: 5
• Grade Level: Undergraduate