helpol plz. Which characteristic of an object is related to both its kinetic energy and its potential energy? A. The object's speed OB. The object's mass о C. The object's velocity OD. The object's height

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