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This is why humans can survive with just a filtration system (exo-packs), but the Navi need higher amounts of carbon dioxide to function. The high level of carbon dioxide and other gases such as hydrogen sulfide keep Na'vi blood pH at 5.25–5.75, which is more acidic than human blood (7.35–7.45).
Short stature refers to a height of a human which is below typical. Whether a person is considered short depends on the context. Whether a person is considered short depends on the context. Because of the lack of preciseness, there is often disagreement about the degree of shortness that should be called short .
Dwarfism is a condition of people and animals marked by unusually small size or short stature. [1] In humans, it is sometimes defined as an adult height of less than 147 centimetres (4 ft 10 in), regardless of sex; the average adult height among people with dwarfism is 120 centimetres (4 ft).
In anthropology, pygmy peoples are ethnic groups whose average height is unusually short. The term pygmyism is used to describe the phenotype of endemic short stature (as opposed to disproportionate dwarfism occurring in isolated cases in a population) for populations in which adult men are on average less than 150 cm (4 ft 11 in) tall.
Below are two tables which report the average adult human height by country or geographical region. With regard to the first table , original studies and sources should be consulted for details on methodology and the exact populations measured, surveyed, or considered.
Height measurement using a stadiometer. Human height or stature is the distance from the bottom of the feet to the top of the head in a human body, standing erect.It is measured using a stadiometer, [1] in centimetres when using the metric system or SI system, [2] [3] or feet and inches when using United States customary units or the imperial system.
Grace gives Neytiri and the other kids a tour of the base and teaches them how to play basketball. After returning home, Mo'at asks the children about what they think about attending the human school. While Neytiri is excited about the idea, Sylwanin points out that at the school, the humans will learn from the Na'vi, but not the other way around.
The typical height of an adult human is between 1.4 and 1.9 m (4 ft 7 in and 6 ft 3 in), although this varies significantly depending on sex, ethnic origin, and family bloodlines. [ 239 ] [ 240 ] Body size is partly determined by genes and is also significantly influenced by environmental factors such as diet , exercise, and sleep patterns .