Is the process in planetary formation when heavy materials sink toward the planet's center and lighter materials accumulate near its surface.

a. orogenyb. superpositionc. ratificationd. differentiation

Why is black history month important

An alliance of two political parties is know as? a. majority b. coalition c. candidate d. government

Which statement best completes the diagram related to the supreme court’s procedures? a. a party in a lower-court case requests that the supreme court overturn the other court’s ruling in the case. b. federal judges nominate a small number of cases to be overturned by the supreme court. c. congress votes on which court cases should be reviewed by the supreme court. d. the president selects court cases involving new laws for the supreme court to review