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At least 37.5 liters (9.9 U.S. gal) of seawater per minute would have to be passed through the system, but this system would not work in anoxic water. Seawater in tropical regions with abundant plant life contains 6–8 mg (0.093–0.123 gr) of oxygen per liter of water. [4] These calculations are based on the dissolved oxygen content of water.
Artificial gills may refer to: Imitation gills put into stuffed fish for the sake of appearance in taxidermy; An inaccurate term for liquid breathing sets; Artificial gills (human), which extract oxygen from water to supply a human diver
Frenetic random activity periods (FRAPs), also colloquially known as zoomies, scrumbling or midnight crazies, [1] are random bursts of energy occurring in dogs and cats in which they run frenetically, commonly in circles. They usually last a few minutes or less. [2] [3] [4] It is not known what causes animals to engage in FRAPs.
A Business Insider video about preauricular sinus points out that evolutionary biologist Neil Shubin suspects "these holes could be evolutionary remnant of fish gills."
Triton, "the world's first artificial gills technology" is a Swedish and Korean organization that claims they have created artificial gills for humans. [1] Released as an Indiegogo project on March 14, 2016, this technology claims to allow divers to spend 45 minutes underwater at depths of less than 15 feet.
Humans have many wonderful qualities, but we lack something that’s a common feature among most animals with backbones: a tail. Exactly why that is has been something of a mystery.
Ileum, caecum and colon of rabbit, showing Appendix vermiformis on fully functional caecum The human vermiform appendix on the vestigial caecum. The appendix was once believed to be a vestige of a redundant organ that in ancestral species had digestive functions, much as it still does in extant species in which intestinal flora hydrolyze cellulose and similar indigestible plant materials. [10]
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