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On the other hand, a "normal" temperature may be a fever, if it is unusually high for that person; for example, medically frail elderly people have a decreased ability to generate body heat, so a "normal" temperature of 37.3 °C (99.1 °F) may represent a clinically significant fever. [37] [39]
A common pathological cause for a high BMR is fever, since a rise in body temperature increases the rate of cellular metabolic reactions. [1] It is estimated that for every degree Fahrenheit of rise in body temperature, the BMR increases by 7 percent.
The dry-bulb temperature (DBT) is the temperature of air measured by a thermometer freely exposed to the air, but shielded from radiation. [1] The dry-bulb temperature is the temperature that is usually thought of as air temperature, and it is the true thermodynamic temperature. It is directly proportional to the mean kinetic energy of the air ...
Winters are generally cool, with a normal January daily mean temperature of 41.9 °F (5.5 °C). [97] On average, there are 69 nights per year that drop to or below freezing, and only 2.7 days that fail to rise above freezing. [97] Raleigh receives an average annual rainfall of 46.07 in (117.0 cm). [98]
The length of larval stage can be delayed by months due to low temperature or lack of food. [17] The pupal stage lasts from 1 to 2 weeks. [ 24 ] [ 25 ] Adults can live typically 47 to 73 days when provided with water and food, such as sugar in captivity or nectar in the wild, [ 26 ] [ 27 ] or survive for about 8 to 10 days on fat reserves ...
If the water is ice-cold the higher melting temperature of heavy ice can also be observed: it melts at 3.7 °C, and thus does not melt in ice-cold normal water. [ 17 ] A 1935 experiment reported not the "slightest difference" in taste between ordinary and heavy water. [ 18 ]
Young tree in natural habitat American chestnut male (pollen) catkins. Castanea dentata is a rapidly-growing, large, deciduous hardwood eudicot tree. [20] A singular specimen manifest in Maine has attained a height of 115 feet (35 m) [21] Pre-blight sources give a maximum height of 100 feet (30 m) and a maximum circumference of 13 feet (4.0 m). [22]
They generally drop their body temperature in this state to 6–30 °C (43–86 °F), and may reduce their energy expenditure by 50 to 99%. [119] Tropical bats may use it to avoid predation, by reducing the amount of time spent on foraging and thus reducing the chance of being caught by a predator. [ 120 ]