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He observes that work expands so as to fill the time available for its completion.
Nutrient density of food refers to how much nutrients you receive through the consumption of a particular food in regards to the number of calories it contains. In other words nutrient nutrient dense foods will give higher nutrients for the fewest amount of calories. we use the nutrient to calorie ration which ofcourse provide a more direct comparison in determining the intake of essential nutrients and the amount of energy that they provide.
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