Answer: And while 25% of Western pharmaceuticals are derived from Rainforest ingredients, less than 1% of these tropical trees and plants have been tested by scientists. The U.S. National Cancer Institute has identified 3000 plants that are active against cancer cells. 70% of these plants are found in the Rainforest.
The lowlands west of Australia´s eatern mountain range are drained by the Murray-Darling River system, with its main headwaters in the <em>Great Artesian Basin.</em>