Which of the following are ORGANS found in the Cardiovascular system? (select all that apply)
Heart
Arteries
Veins
Capillaries
Blood

All of them except blood and capillaries

Ten percent of energy is transferred from sun to the level indicated.

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