Table for Individual Question FeedbackPoints Earned:1.0/1.0Correct Answer(s):C11.The consensus of the world’s climate scientists, as generated by the UN-sponsored Intergovernmental Panel on Climate Change (IPCC), is that:A) Human activities have raised CO2levels in the atmosphere, and these higher levels of CO2B) Human activities have raised CO2levels in the atmosphere, warming the planet, but if we C) Human activities have raised CO2levels in the atmosphere, warming the planet, and the D) Human activities have lowered CO2levels in the atmosphere, starving plants and causing are the primary cause of the ozone hole.proceed with business as usual for the next few centuries, the additional changes we cause will be smaller than the changes we already have caused.changes so far have been small compared to the changes that are likely over the next centuries unless we humans alter our behavior.
death of the tropical rain forests.E) Human activities have lowered methane levels in the atmosphere, causing cows to Feedback: Human activities have raised CO2in the atmosphere, but if we continue with businessas usual, we haven’t seen anything yet—we haven’t even doubled CO2, but a quadrupling or evenoctupling seems possible. Chlorofluorocarbons used as refrigerants are responsible for the ozone hole, and cow flatulence is not greatly affected by external methane levels, which are rising in any case. Besides, bovine belching is a larger methane source than is outlet through the other orifice.become more flatulent to achieve balance.Table for Individual Question FeedbackPoints Earned:1.0/1.0Correct Answer(s):C12.Regarding global warming, most scientists (including those who have advised the United Nations through the Intergovernmental Panel on Climate Change) agree that if we continue to burn fossil fuels at an accelerating rate:major contributors to climate change through cutting of tropical rain forests and other activities.are primarily being caused by wealthier people in colder places.
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- Fall '08
- Global Warming, CO2, Correct Answer, Greenhouse gas, Coal, Individual Question