The best reason I can think of for why we believe that air is a mixture is that freezing air slowly yields different liquids at different temperatures. Liquid nitrogen has a different boiling point than liquid oxygen. They also freeze at different temperatures.
An inguinal hernia is a protrusion of abdominal-cavity contents through the inguinal canal. Symptoms are present in about 66% of affected people. This may include pain or discomfort especially with coughing, exercise, or bowel movements. Often it gets worse throughout the day and improves when lying down.
Inguinal Hernia. The inguinal canal can be thought as a tunnel that goes through the abdominal wall. This opening is formed by two gaps in the muscles of the abdomen. In males, the inguinal canal is larger because it passes the spermatic cord, which contains the vas deferens.