Refer to the accompanying photograph. Which statement best explains why the owl has its head almost upside down?
a. Photoreceptors are concentrated near the bottom of the eye.
b. Photoreceptors are concentrated near the top of the eye.
c. Loud music from a passing car has caused damage to the sense of balance.
d. An obstruction in its ear has caused this instinctual behavior.
e. The presence of prey above has caused this physical alert.
ANSWER: b
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