FOOD AND NUTRITION.
Foods that are eaten on a regular basis make up a diet. Although geographic location and family traditions play major parts in forming dietary habits, food choices vary from person to person. To a high degree, what people eat affects their health and their enjoyment of life. In turn, healthy habits and a happy outlook can improve the ways in which the human body makes use of food.
With the help of the sun, plants make their food from chemicals in the earth, water, and air. Animals--human beings included--cannot make their own food but must eat plants, other animals, or both.