Answer:
The tendency to develop some types of cancer is believed to be inherited — that is, the genes you were born with might carry a predisposition for cancer.
Explanation:
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).