What 1857 supreme court case declared the missouri compromise unconstitutional

How the environment of the northeast region affects the lifestyle of the people that live there

Restricting immigrants from entering a country may be based on what belief?  

Match the item to the definition: indirect correlation, correlational research, correlational research, covary, pearson correlation coefficient, pearson correlation coefficient, direct correlation a. used to describe the relationship between two or more naturally occurring variables b. determines whether scores on the two variables covary c. whether two variables vary or change together d. denoted by the symbol "r" e. provides information about the sign (direction) and magnitude(strength) of the linear relationship. f. when the correlation is positiveg. when the correlation is negative