The different times of the year with different weather patterns are called

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

What is “the compromise of 1850? ” *

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.