your mouth has about 50 million different germs and bacteria in it so your mouth is probably dirtier
no
Yes because everyone touches the same stuff you touch with your hands, most of the time your feet are in your shoes
Because the hairs in your nose filter the air
no
no
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.
The nose breathe air in. Sometimes you do the same with the mouth.
The nose can be said to be "inferior" (lower than) the mouth when the body is inverted, as opposed to "superior" when one is upright. The nostrils would be below the mouth and open, as opposed to above the mouth and covered.
You can breath through your nose or mouth.
The nose is above the mouth.
when you breath through your nose you catch more of the germs trying to enter your body on the hairs in your nose. when you breath through your mouth there is much less protection against germs
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.