For Durkheim the result of the division of labour is positive in that there is no need to compete in the sense of struggling just to survive. Division of Labour. The division of labour is, then, a result of the struggle for existence, but is a mellowed dnouement.
Recommended daily calorie intakes vary across the world. According to the National Health Service (NHS), UK, the average male adult needs approximately 2,500 calories per day to keep his weight constant, while the average adult female needs 2,000. US authorities recommend 2,700 calories per day for men and 2,200 for women.
Vitamin A Requirements for Adults. Adult men aged 19 and older should consume 900 micrograms of vitamin A per day. The daily requirement of the vitamin for adult women aged 19 and older is 700 micrograms.nfants up to 6 months need 400 micrograms of vitamin A per day, while infants between ages 7 months and 12 months require 500 micrograms per day.