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Module 4 3 Assignment Booklet 4C 7. The Amazon rain forest covers approximately 6 million km² in the northern part of South America. Large portions of this rain forest have been destroyed as result of lumbering and clearing for farmland. Explain the effect of continued destruction of this rain forest on the global climate. 8. The majority of scientists hold the view that global warming is due to human activities and further climate change may result. List two reasons critics give to disagree with climatologists about the global effects of human activities on climate. 9. The Intergovernmental Panel on Climate Change (IPCC) has stated that global warming is linked to the increase in greenhouse gas levels in the atmosphere. Give a reason for taking this statement and others by the IPCC much more seriously than the views of any individual scientist.