A. Blood
B. Mucus
C. Saliva
D. Water
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The correct answer to the question: "The first line of defense in salamanders and and frogs is __________secretion?" is "Mucus".
A. Blood
B. Mucus
C. Saliva
D. Water
The correct answer to the question: "The first line of defense in salamanders and and frogs is __________secretion?" is "Mucus".
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