Final answer:
The water cycle does affect ocean salinity and density.
Step-by-step explanation:
The water cycle does have an effect on ocean salinity and density.
During the water cycle, water evaporates from the ocean, leaving behind dissolved salts. When this water vapor condenses and forms clouds, it can eventually precipitate back into the ocean. As the water returns to the ocean, it brings back the salts, increasing the salinity of the water.
Additionally, evaporation from the ocean surface leads to a decrease in water volume, which can increase the density of the remaining water. So, the water cycle does indeed have an impact on ocean salinity and density.