I am a dental hygienist and we see ecchymosis in the mouth, usually on the upper hard and soft palate, it is caused by sexual abuse. Usually caused by something forced in the mouth.
you have to dod mouth to mouth so that if a person is not breathing then you pass air through your mouth to the other person's lungs to keep them ALIVE
The air you breath is approximately 21% O2 when you breath out its about 15% O2. When you breath into a person, you are breathing for them. Its the same thing as if they were breathing on there own,...