ryleejane23
Answered

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What causes exhalation?
a signal from the medulla to the mouth and nose
O a signal from the alveoli to the medulla
O a signal from the diaphragm to the medulla
O a signal from the medulla to the lungs

Sagot :

oom60
A signal from the medulla to the mouth and nose

Answer:

its a

Explanation:

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