Independence and the Bicycle — Test Answers

Based on "Climate Change: An Overview,” what are the effects of global climate change? Choose three correct answers.

Which best describes the language of "Climate Change: An Overview”?

Read the excerpt from "Climate Change: An Overview.” One skeptic has often railed against "this whole global warming hoax," pointing to brutal winters in recent years as evidence. Neil Kagan, senior counsel for the National Wildlife Federation, mused that in no other area would journalists be covering so much of the minority viewpoint. Which word from this excerpt has a negative connotation?

Read the excerpt from "Climate Change: An Overview.” By the early twentieth century, carbon emissions from fossil-fuel burning reached 1 billion tons a year. Automobiles, airplanes, and domestic and agricultural energy demands all contributed to the rising trend. In the 1950s, scientists used a new generation of equipment to confirm that carbon-dioxide concentrations were doubling and that this would have the effect of increased temperatures. What chronology is described in this excerpt?

Read the excerpt from "Climate Change: An Overview.” Today, ninety-seven percent of climate experts agree that humans are causing climate change. No scientific body of international or national standing dissents from this view. (A few maintain a non-committal position.) That is not to say that the research is universally accepted. As long as scientists have been positing that human emissions of greenhouse gases are heating up the planet, others have denied their arguments. The statistic in this excerpt supports the idea that