Final answer:
Carbohydrates, proteins, and lipids are categories of organic compounds that provide energy and building materials for the body. Carbohydrates are the main source of energy, proteins provide building materials, and lipids include fats and oils.
Step-by-step explanation:
Carbohydrates, proteins, and lipids are categories of organic compounds. They give your body energy, though carbohydrates are the main source of energy. Proteins provide building materials, such as amino acids to build your own proteins. Proteins, vitamins, and minerals also help control body processes. Carbohydrates include sugars such as the glucose made by photosynthesis. Often glucose is stored in large molecules such as starch. Proteins are found in foods like meats and nuts. Lipids includes fats and oils.