When scientists disagree, a. a new method of doing things must be devised. b. each must take sides and develop a new area of science. c. philosophers must be called in to settle the argument. d. scientific experimentation and debate can settle the differences of opinion.

Extensive and unusual cold snaps have occurred here recently. is this evidence that global warming is lessening or not occurring? no—although the long-term trend is for warming, short-term weather patterns can still be variable. no—melting of glaciers and ice caps is making the oceans cooler, which can cause cold snaps. yes-- if global warming really were occurring, cold snaps wouldn’t happen. yes—due to global warming, weather patterns should be become less—not more—variable.