Carbon monoxide (CO) . A. is a compound made of oxygen and carbon
B. is an element
C. increases in volume when compressed
D. is made of two oxygen atoms and two carbon atoms

Carmen is load furniture and boxes onto a moving truck. she picks up boxes of her things, places them on a cart, and pushes the cart to the moving van. which term best describes the type of force carmen uses? a. contact b. friction c. gravity d. noncontact