Which best compares the motions of dots c and d? a) both c and d are speeding up. b) both c and d are moving at a constant velocity. c) c is speeding up and d is moving at a constant velocity. d) c is slowing down and d is moving at a constant velocity.

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter