Final answer:
Carbohydrates are an essential macronutrient that provides energy to the body. They can be found in grains, fruits, and vegetables.
Step-by-step explanation:
Carbohydrates are a macronutrient that provides about 4 Calories per gram. They are an essential part of our diet and can be found in grains, fruits, and vegetables. Carbohydrates provide energy to the body, particularly through glucose, a simple sugar. They also have other important functions in humans, animals, and plants.