More than one-tenth of trees in the Amazon rainforest have been removed since the 1960s, contributing to a 1.5% rise in carbon dioxide levels since then.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/amazon-rainforest-lungs-world-has-lost-10th-its-trees-5-decades
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/international-business-times
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forests
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/deforestation
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/amazon
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/trees
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-sinks