Mostly salinity and temperature
GRAVITATION FORCE IS NOT DEPEND ON THE DENSITY IF IT DEPENDS ON DENSITY A WATER IN A SPOON WILL BE EQUALLY RISE AS OCEAN WATER IT MEANS MOON GRAVITY IS ONLY DEPEND ON mass equation
Mostly salinity and temperature
The density of ocean water is calculated using the temperature, salinity, and pressure of the water. These factors impact the water's mass and volume, which determines its density. The density of ocean water can vary depending on these factors, with colder, saltier, and deeper water typically being denser.
The water would have the same density anywhere it is.
It is called an ocean current
because salt is higher density than water and dissolves in the water, increasing density
No
No
Depth
The density of something does not depend on the amount of the substance you have, the density of 1 gram of water is the same as the density of 100000000 grams of water. The density of pure water at standard temperature and pressure is 1.
water temperature
When the ocean water freezes, it increases the salinity. When the ocean water freezes at the surface, ice will float on top of water because ice is less dense than liquid water. The dissolved solids are squeezed out of the ice and enter the liquid water below the ice. This increases the salinity of the water. The density of the water also increases.