The forearm bone is part of the elbow joint. the bicep muscle in the forearm bends it against the weight of the forearm and a weight that the hand is holding. this best describes muscle and bone working together as a

: When the muscle on the top of the arm relaxes and the muscle on the bottom of the arm contracts, the arm straightens. When the muscle on top of the arm contracts and the muscle on the bottom of the bone relaxes, the arm bends. Muscles work in pairs to create movement.

Explanation:

cognitive activities are mental processes through which we make sense of the world around us or get to know or experience our environment (internal and external). examples of cognitive activities are reasoning, thinking, perceiving, decision-making, listening, observing,etc.

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there