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Author Question: ) What type of signal is brief and can work among obstructions at night? A) olfa (Read 541 times)

penza

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on: Oct 27, 2013
) What type of signal is brief and can work among obstructions at night?
A) olfactory
B) visual
C) auditory
D) tactile
E) magnetic


Celeste

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Reply #1 on: Jul 27, 2019
C


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