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

Which of the following is defined as combinations of soil particles that vary in size and shape?

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted