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...Questions and answers chapter diet nutrition text book page define the term a balanced answer contains correct proportions of carbohydrates fats proteins minerals vitamins water roughage needed to maintain good health energy balance occurs when intake is equal expenditure how can an understanding food classifications illustrated in figure assist maintenance optimal pyramid weight for sports performer known as illustrates principles with fruits vegetables on bottom representing fat butter bulk healthy oils at margarine top cooking oil depends protein milk cheese demands sport some yoghurt eggs red so must be manipulated meat chicken fish accordingly fruit per day fibre best fuel muscle cho base carbohydrate form cereal beans pasta bread biscuits cake etc eaten should by performers too low will experience decreased athletic performance loss used fatigue nutrient deficiencyand irritability sourced from are essential functions such metabolic regulation bone tissue growth repair gastrointes...