Why do teens need to eat more from the grains, fruits and vegetables food groups?

Each group of foods (grains, fruits, and vegetables) enable teens to grow healthily, as these foods provide the sufficient nutrients and vitamins needed to do so. Grains provide fiber, b vitamins, and minerals, reducing the chances of becoming chronically ill. Vegetables and fruits are natural sources that provide essential vitamins for humans to live and grow (such as vitamin a and vitamin c). Vegetables and fruits are rich in these nutrients, as they help maintain a healthy blood pressure, their dietary fibers lowering the risks of heart disease, and also maintains (or boosts even) the health of our eyes, skin, and other essential parts of the body as well.

relationship between pressure and air volume and led to the understanding of how respiration works; i believe this is the correct answer ; /// good luck