Question 10 Which body systems are involved in the reflex action shown in the diagram?
ОА
the respiratory and excretory systems
B
the excretory and muscular systems
CO) O
с
the muscular and nervous systems
D
the nervous and digestive systems

Um can u take a picture of the work

Idon't know how to do this but maybe ask your mom or dad

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

Ican not answer this question since it does not have enough information