All of the following statements about the sinuses are TRUE EXCEPT which one?
A) The sinuses are located in several of the facial bones.
B) The sinuses are lined by a tissue that produces and secretes mucus.
C) The sinuses give the human voice its characteristic resonance and tone.
D) The sinuses add weight and bulk to the skull and facial bones, strengthening them.
E) The sinuses connect to the nasal cavity by small passageways.
D
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Prior to Darwin's book On the Origin of Species, people thought what about species?
A. Species changed over time because they were not adapted to their environment. B. Species were designed already perfectly adapted to their environment. C. Species evolved at one point, but no longer changed because they were not adapted to their environment. D. Species changed over time as guided by a divine creator.
Which of the following did not exert selective pressure that acted in favor of having a large brain in humans?
A. tool use B. social living C. language D. being bipedal
Nucleic acid techniques have great power as diagnostic tools because they may be
A. very specific. B. quick and easy to perform. C. used to enhance the growth of bacteria. D. used to selectively inhibit the growth of certain bacteria.
When threatened, a cobra will rear up and spread its hood, which makes its head look larger and displays the eye spots. What kind of behavior is this?
A) A readiness to mate B) A desire to fight C) Dominance in a social group D) A submissive posture E) An aggressive display