| 3.2 |  Importance of a Balanced Diet | 
	
	
		
			| A balanced diet is a diet that contains all the food classes in the right quantities that are required by the body. | 
	
Food Pyramid
               
Source : Science Text Book Form 2 
Factors that Influence Calorific Requirement
	- Body size
- Age
- Work
- Gender
- State of health
- Climate
Calorific Value of Food
	- The total amount of energy released when 1 g of of food is burned is called energy value or calorific value.
	
		
			| 1 calorie (cal) = 4.2 joule (J)      1 kilocalorie (kcal) = 4.2 kilojoule (kJ) |