Which two factors of ocean water would have the highest density? warm water and high salt content

warm water and low salt content

cold water and high salt content

cold water and low salt content

He should put sand around the spill in order to contain it so that it won't spread

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on