Ans: We all are familiar with the fact that there are many different gases that can be grouped in order to create intestinal gas. One of the major components of the internal gas is methane. It is a gas that is produced in the body and hence it is an endogenous gas. One of the main causes of methane to be formed in the body is the food that we tend to eat. It is known to us that certain bacteria that are present in the human intestines are the ones that tend to break down the food materials in order to create these gases. The same is the case with methane as it is caused by bacterial action.