Approximately how old are the outer banks

:calculate the sum of the interior angles of a 13-sided polygon.

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

Compared with the land in the highlands, the lowlands region of england a) rockier and more difficult for farmingb) the center of business and industryc)richer in coal reservesd)covered by more fertile farmland d) covered by more fertile farmland