How are the temperatures of tropical seawater and polar seawater different?

Explanation:

o At the polar latitudes the surface temperature remains near the freezing point of sea water about -1.9°C. Pure water freezes at 0°C and boils at 100°C under normal pressure conditions. When salt is added the freezing point is lowered and the boiling point is raised

o The water temperature of tropical oceans thus typically exceeds 20°C and stays relatively constant troughout the year. Particularly intense radiation directly over the equator evaporates seawater and forms a mass of very warm, humid tropical air that subsequently rises and cools as it flows north and south

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.