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Trench foot or immersion foot: a condition caused by repetitive exposure to water at non-freezing temperatures [11] The normal human body temperature is often stated as 36.5–37.5 °C (97.7–99.5 °F). [13] Hyperthermia and fevers are defined as a temperature of greater than 37.5–38.3 °C (99.5–100.9 °F). [8]
Water is an inorganic compound with the chemical formula H 2 O.It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance.It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [20]).
[235] [236] The types of food consumed, and how they are prepared, have varied widely by time, location, and culture. [237] [238] In general, humans can survive for up to eight weeks without food, depending on stored body fat. [239] Survival without water is usually limited to three or four days, with a maximum of one week. [240]
The human population exploits a large number of other animal species for food, both of domesticated livestock species in animal husbandry and, mainly at sea, by hunting wild species. [164] [165] Marine fish of many species are caught commercially for food. A smaller number of species are farmed commercially.
Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. [116] Under optimal conditions, bacteria can grow and divide extremely rapidly, and some bacterial populations can double as quickly as every 17 minutes. [117] In cell division, two identical clone daughter cells are produced. Some bacteria ...
At a pressure of 1 atm (0.101325 MPa), the gas deposits directly to a solid at temperatures below 194.6855(30) K [2] (−78.4645(30) °C) and the solid sublimes directly to a gas above this temperature. In its solid state, carbon dioxide is commonly called dry ice. Pressure–temperature phase diagram of carbon dioxide. Note that it is a log ...
A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia (/ m ə ˈ m eɪ l i. ə /).Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones.
At the time of the first British arrival, Darjeeling was known among its Lepcha inhabitants as Dorje-ling, or the "Place of the Thunderbolt." [g] According to the Oxford Concise Dictionary of World Place Names, Darjeeling is derived from the Tibetan Dorje ling or Dorje-glin, meaning "Land of Dorje," i.e. of the vajra, the weapon of the Hindu god Indra.