The optic nerves from each eye come together in the brain at the

Light is to __________ energy as sound is to __________ energy

a. radiant; mechanical b. mechanical; chemical c. thermal; radiant d. radiant; thermal e. visual; acoustic

On Christmas Day, you open a present; it is not what you wanted or needed. In fact, you are quite disappointed. Nevertheless, you give the biggest smile you can. Assuming you are adept at putting on a "good face,"

what clue will provide evidence that you did not like the present? a) A false smile is given away by visible teeth. b) The very slight flaring of the nostrils is a giveaway. c) The size of the whites of the eyes is the best clue that you did not enjoy the present. d) A telltale sign appears around your eyes because the muscles there are not under voluntary control