Which factors contribute to the development of oceans currents? Select ALL that apply
a. When oceanic waters heat up they become less dense
b. Higher salinity in the lower layers of water cause it to move from the depths to more shallow areas
c. Warmer water moves above the cooler water and gives off its heat to the surrounding environment
d. Surface waters heat up, making them more dense, causing them to sink
e. As water cools, it begins to sink and begins the process again