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They also showed why lifespan scales as the + 1 ⁄ 4 power and heart rate as the - 1 ⁄ 4 power. Blood flow (+ 3 ⁄ 4) and resistance (-3 ⁄ 4) scale in the same way, leading to blood pressure being constant across species. [37] Hu and Hayton in 2001 discussed whether the basal metabolic rate scale is a 2 ⁄ 3 or 3 ⁄ 4 power of body mass.
The pygmy mammoth is an example of insular dwarfism, a case of Foster's rule, its unusually small body size an adaptation to the limited resources of its island home.. A biological rule or biological law is a generalized law, principle, or rule of thumb formulated to describe patterns observed in living organisms.
Lipinski's rule of five, also known as Pfizer's rule of five or simply the rule of five (RO5), is a rule of thumb to evaluate druglikeness or determine if a chemical compound with a certain pharmacological or biological activity has chemical properties and physical properties that would likely make it an orally active drug in humans.
Bergmann's rule is an ecogeographical rule that states that, within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions. The rule derives from the relationship between size in linear dimensions meaning that both ...
The metabolic theory of ecology (MTE) [1] is the ecological component of the more general Metabolic Scaling Theory [2] and Kleiber's law. It posits that the metabolic rate of organisms is the fundamental biological rate that governs most observed patterns in ecology. MTE is part of a larger set of theory known as metabolic scaling theory that ...
Getting a handle on your personal finances may take more than just clipping coupons and starting an emergency fund. It may mean changing your spending habits and implementing savings tips to make ...
The 75 Soft Challenge is safe and effective to do for 75 days and beyond, and can lead to lasting changes and healthier habits, both experts say. As always, check with your doctor before starting ...
Allen's rule - Hare and its ears on the Earth [1]. Allen's rule is an ecogeographical rule formulated by Joel Asaph Allen in 1877, [2] [3] broadly stating that animals adapted to cold climates have shorter and thicker limbs and bodily appendages than animals adapted to warm climates.