How do muscles the body move? a. the muscle contracts causing the tendon to pull the bone. b. the ligament pulls on the muscle attached to the bone. c. the muscle pushes against a joint. d. one muscle pulls on another muscle.

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?