9. compare the patterns of the thermocline and halocline in the high latitudes and low latitudes (i. e. tropics). a. the halocline (near the surface) in the low latitudes (i. e. tropics & the equator) exhibits a decrease/increase (choose one) in salinity. explain. (2 points) b. the surface salinity in the tropics (around 30 degrees n and s) is higher/lower (choose one) than the surface salinity at the equator. explain. (2 points) [hint: consider the primary factors that influence sea surface salinity and how they change with latitude] temperature low high surface mixed zone transition zone high latitude low latitude deep zone