Your elbow and knee are examples of (1 point) Responses ligaments. ligaments. joints. joints. cartilage. cartilage. angles. angles.

joints.

The muscular system allows our bones to (1 point) Responses strengthen. strengthen. contract. contract. lengthen. lengthen. move.

move.

During the exchange of air in your lungs, your body seeks to keep oxygen and release ______________ which will then exit your body (1 point) Responses microorganisms microorganisms carbon dioxide carbon dioxide plasma plasma mucus mucus

carbon dioxide