Why is the surface temperature of the ocean usually greater than the temperature on the ocean floor? (A) More photosynthetic organisms live near the surface.
(B) The density of the water is higher at the surface.
C)The surface of the water receives more sunlight.
D)Salinity is higher along the surface of the water.

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action