Why do we , and nearly all animals and birds have two nostrils ?
In: 56
One nostril can get congested and prevent you from breathing. Two can get congested but that’s not as likely as one getting congested.
Example: You lay down on your side. One nostril gets plugged but you can still breathe from the other one. If you had one nostriland it gets plugged this way you wouldn’t be able to breathe unless there was a way your body can unplug it.
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