PLEASE HELP with the 6 steps if you answer it correctly I will mark brainliest

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

When solid surfaces slide over each other the kind of friction that occurs is called friction