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colleen colleen
wrote...
Valued Member
Posts: 17077
10 years ago
Which is NOT considered to be a primary function of the respiratory system?
A) regulation of water balance
B) regulation of pH balance
C) protection against pathogens
D) vocalization
E) gas exchange
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Sunshine ☀ ☼
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Answer accepted by topic starter
padrepadre
wrote...
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Educator
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Posts: 21608
10 years ago
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