` We all need food .without it, we cannot live. Even animals, birds, reptiles and fish want food to grow. Food gives us energy it helps the body to grow.food aids the body to make strong teeth ,mucles and bones. It olso keeps the body warm. the things in the food that do all these jobs are called nutrients .There are five nutrients. they are proteins ,c arbohydrates,fats, minerals and vitamins. so we must taa balance diet.