The Digestive System is formed by a set of organs that act on the human body. The action of these organs is related to the process of food transformation, which aims to help the absorption of nutrients. All of this happens through mechanical and chemical processes.
The Digestive System (new nomenclature) is divided into two parts.
One is the digestive tract itself, formerly known as the digestive tract. It is divided into three parts: high, medium and low. The other part corresponds to the attached organs.
The esophagus is part of the upper digestive tract.
My answer would be '<span>Why are physical fitness programs necessary for improving student health?' Because in the article it discusses a 'room for improvement' when talking about how many children are doing the 'quota' of </span>exercise.