In which direction does wave energy travel?
A. up and down
B. north and south
C. with the currents
D. Toward the shore

Which of the following is an oxidation-reduction reaction? (pictured below)

Facilitated diffusion move large molecules and/or polar molecules across the cell membrane. what does facilitated diffusion use to do this?

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