2, because a theory is not a law that can not be changed, and new evidence can change a theory.
The answer is gliding. Abduction, rotation (external and internal) and extension all occur in most joints including the ball-and-socket , saddle and condyloid joints. The shoulder joint is a ball-socket joint. Gliding occurs in intercarpal joints of the hands.
Answer:
Answer is PHOTONS, named by Einstein
Explanation:
NUTRITION AND AGE FACTOR!
