This saltwater lake is the largest lake or inland sea in the world. is it below sea level and is located east of the caucasus mountains. it is a natural boundary between europe and asia.

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