The distance covered by a degree of longitude a) is 1/180 of earth’s circumference. b) is always equal to 11 km. c) increases as you approach the poles. d) decreases as you approach the poles.

Which characteristics of temperature and salinity have the greatest influence on the movement of deep-ocean currentsa. warm and low salinityb. cold and high salinityc. cold and low salinityd. warm and high salinity