one sentences only. why should we breathe through the nose, and not through the mouth
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Because the nostrils are smaller than the mouth, air exhaled through the nose creates a back flow of air (and oxygen) into the lungs. And becausewe exhale more slowly through the nose than we do though the mouth, the lungs have more time to extract oxygen from the air we've already taken in.
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Answer:
BECAUSE NOSE CONTAIN HAIRS WHICH TRAP DUST PARTICLE AND DON'T ALLOW IT TO ENTER TO LUNGS
MOUTH DON'T HAS SUCH MODIFICATION
HOPE IT HELPS PLSS MARK BRAINLIEST
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