E.g., research assumes greenhouse gas emissions cause
warming without explicitly stating humans are the cause»... carbon sequestration in soil is important for mitigating
global climate change» (4a) No position Does not address or mention the cause of
global warming (4b) Uncertain Expresses position that human's role
on recent
global warming is uncertain / undefined «While the extent of human - induced
global warming is inconclusive...» (5) Implicit rejection Implies humans have had a minimal impact
on global warming without saying so explicitly E.g., proposing a natural mechanism is the
main cause of
global warming»... anywhere from a major portion to all of the
warming of the 20th century could plausibly result from natural causes according to these results» (6) Explicit rejection without quantification Explicitly minimizes or rejects that humans are causing
global warming»... the
global temperature record provides little support for the catastrophic
view of the greenhouse effect» (7) Explicit rejection with quantification Explicitly states that humans are causing less than half of
global warming «The human contribution to the CO2 content in the atmosphere and the increase in temperature is negligible in comparison with other sources of carbon dioxide emission»»