Why is the crude birth rate "crude"?

The district of columbia could be eliminated completely if a majority of congress voted in favor of the action. a. true b. false

Canada plays an important role in the global community in all of the following ways except by a. acting as a superpower with influence over europe and asia. b. promoting arms control and disarmament. c. working with the commonwealth of nations to promote trade. d. promoting trade with japan and other asian countries.

What first caused people to consider that the continents were once one large landmass?