The United States' efforts to control global climate change are best described as __________

Some experiments require observers to take many measures of the dependent variable over time and across participants. If they become better observers of the dependent variable during the course of the study, it produces a confound referred to as

a. instability. b. unreliability. c. instrumentation. d. insensitivity.

?The repeal of "don't ask, don't tell" came

A. ?into full enforcement in 2011. B. ?as a result of a U.S. District Court ruling. C. ?due to quick action by Congress after the 2008 election. D. ?because of a change in public opinion on the issue. E. ?into full enforcement in 2011 and came because of a change in public opinion on the issue.