it doesn't really matter, because both trap dirty and dust. the only difference is that you normally don't breath louder through your mouth.
Both, breathing through your nostrils act as a vent-like mechanism filtering out pollution from the air, and breathing through your mouth fulfills your lungs with the right amount of oxygen it needs.
it is better to breath in through your nose
There is improved filtering and warming of the air when breathing through the nostrils. Upper respiratory infections (and even lower respiratory infections) are less likely to occur in those who are not mouth breathers.
A lion gets oxygen by breathing in air through the nostrils or mouth and into two internal lungs (as a human does).
Breathing though your nose - allows the hairs in your nostrils to trap any dust particles. It also helps to warm the air as it travels to the lungs.
The Nare is a nostril, a frogs nostrils or breathing holes above his mouth.
Through their nostrils and mouth.
Actually breathing in with your nose and out with your mouth is best while running, the nose acts as a natural filter for the air you breath in.
Through their nostrils and mouth.
Yes all boas and all other snakes have nostrils however the hole in the mouth for breathing while they are eatting is called the jacobsens organ
The germs in the air go through the hair in your nose and get caught in it, when they go through your mouth the bacteria is heading into your lungs and drys out your mouth if you sleep breathing through your mouth.
through their mouth or nosethey breath through their lungs and mouth