Roller coasters use potential and kinetic energy to move carts around the track. Which selection below organizes the points of potential energy from greatest to least? C, D, H, K, N B, D, H, J, L A, E, G, I, M A, D, H, K, M

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping