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  2. Composition of the human body - Wikipedia

    en.wikipedia.org/wiki/Composition_of_the_human_body

    Parts-per-million cube of relative abundance by mass of elements in an average adult human body down to 1 ppm. About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium ...

  3. Marginal product - Wikipedia

    en.wikipedia.org/wiki/Marginal_product

    Average physical product (APP), marginal physical product (MPP) In economics and in particular neoclassical economics, the marginal product or marginal physical productivity of an input (factor of production) is the change in output resulting from employing one more unit of a particular input (for instance, the change in output when a firm's labor is increased from five to six units), assuming ...

  4. Body fat percentage - Wikipedia

    en.wikipedia.org/wiki/Body_fat_percentage

    However, its accuracy declines at the extremes of body fat percentages, tending to slightly understate the percent body fat in overweight and obese persons (by 1.68–2.94% depending on the method of calculation), and to overstate to a much larger degree the percent body fat in very lean subjects (by an average of 6.8%, with up to a 13% ...

  5. Marginal product of labor - Wikipedia

    en.wikipedia.org/wiki/Marginal_product_of_labor

    The average product of labor (APL) is the total product of labor divided by the number of units of labor employed, or Q/L. [2] The average product of labor is a common measure of labor productivity. [4] [5] The AP L curve is shaped like an inverted “u”. At low production levels the AP L tends to increase as additional labor is added.

  6. Blood - Wikipedia

    en.wikipedia.org/wiki/Blood

    Blood accounts for 7% of the human body weight, [9] [10] with an average density around 1060 kg/m 3, very close to pure water's density of 1000 kg/m 3. [11] The average adult has a blood volume of roughly 5 litres (11 US pt) or 1.3 gallons, [ 10 ] which is composed of plasma and formed elements .

  7. Human nutrition - Wikipedia

    en.wikipedia.org/wiki/Human_nutrition

    Human nutrition deals with the provision of essential nutrients in food that are necessary to support human life and good health. [1] Poor nutrition is a chronic problem often linked to poverty, food security , or a poor understanding of nutritional requirements. [ 2 ]

  8. Production function - Wikipedia

    en.wikipedia.org/wiki/Production_function

    To simplify the interpretation of a production function, it is common to divide its range into 3 stages. In Stage 1 (from the origin to point B) the variable input is being used with increasing output per unit, the latter reaching a maximum at point B (since the average physical product is at its maximum at that point).

  9. Value of life - Wikipedia

    en.wikipedia.org/wiki/Value_of_life

    For instance, if the VSL is estimated from the World Bank VSL adjusted to country-specific gross domestic product, which reflects a human capital approach, then the VSL in Singapore would be calculated to be US$8.96 million in 2014 (S$11.3 million in 2014, in 2014 S$, which is approximately 1.09 S$ in 2022).