Sound can best be thought of as
A) compression of air molecules by an object.
B) changes in air pressure produced by the vibration of an object.
C) waves of acoustic energy that travel at fewer than 20 miles per hour.
D) packets of energy.
E) expansion of air molecules produced by a traveling object.
Question 2
An example of the value of audition relative to vision is that only audition
A) is used to communicate with others of our species.
B) provides information from other animals.
C) can provide warning signals about the environment.
D) works both day and night.
E) works underwater better than it does on dry land..
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