A. A UNIT OF ENERGY SUPPLIED BY FOOD.
A calorie is a unit of energy. Historically, scientists have defined "calorie" to mean a unit of energy or heat that could come from a variety of sources, such as coal or gas. In a nutritional sense, all types of food — whether they are fats, proteins, carbohydrates or sugars — are important sources of calories, which people need to live and function.
Sustain a regular routine of exercise for 30-60 minutes with minimal fatigue
Answer:
Aid in Digesting Food.
Explanation:
The skeletal system is all of your bones. It gives a structure to the body, and it protects the organs in the body. The digestive system is all of the organs that process the foods and drinks you consume. It filters out toxins and absorbs nutrition and vitamins to create energy.
There are many different systems involved in when we exercise, the three main ones are the Respiratory system which is involved in breathing the circulatory system which is about circulation of blood around the body and finally the muscular system and finally the Muscular system which is about how we move.
Explanation:
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