Which is the best example of commensalism? a. honey bees feed on the pollen of cornflowers and the flowers reproduce. b. barnacles ride on a gray whale’s back to obtain food, and the whale is not harmed. c. squirrels and chipmunks eat the same nuts in a forest where food is scarce. d. prairie dogs often collect and eat food in groups so they are better protected from enemies.

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box