Why does Ender go with Graff to the battle school?

How were the economies of the northern and southern states different? how ere they the same? what factors led them to develop differently?

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

Recall this unit’s essential question: what are the benefits and risks of interdependence? provide examples as evidence from your studies to explain two benefits and two risks of interdependence.