Does age factor into a cell phone being a need or a luxury? Explain with specific examples.

The earth's internal process which drives seafloor spreading is

The point (-2,5) is located in quadrant

The caste system in india was used for what purpose? a) to ensure that all people had an adequate income b) to prevent the rich from taking too much power c) to provide social control and conformity according to one’s birth d) to draft a military capable of defending india from mongol invasion