The answer to this is systematic musicology. (:
Did you mean salinity? if so i think differences in the density of water can also cause currents to form and move. Density is affected by temperature and salinity. Cold water or water with dissolved salts (higher salinity) is denser than warm water or water without dissolved salts (low or no salinity).
I know that if the acceleration isn't zero then the object has to be constantly slowing down or speeding up
Answer:
3, Setup, the Confrontation, and the Resolution
Explanation: