Why is it necessary for organisms to remove waste from their body?

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

Advection fog occurs when warm air blows over a cold surface like snow and since tropical water is warm advection fog rarely forms over it