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From the high Andes to the tropical rainforest, South America's plants and animals are often unique and spectacular.
They may not last forever, though. Deforestation of the Amazon basin continues unabated, threatening the myriad species
within. Experts say there are 25 years' worth of trees left in Brazil at current logging rates. Besides providing a home
for thousands of life forms, these trees help clean our air. Without them, increased air pollution traps heat from the sun,
resulting in a 'greenhouse effect' and climate change on a global scale.
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