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List of chemical elements. 118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z ). [ 1]
The policy is intended to protect users of the marine environment from shark attack following the deaths of seven people on the Western Australian coastline in the years 2010 to 2013. [25] Baited drum lines are deployed near popular beaches using hooks designed to catch the vulnerable great white shark, as well as bull and tiger sharks.
It is commonly referred to as the mako shark, as is the longfin mako shark ( Isurus paucus ). [ 1][ 4][ 5] The fastest known shark species, able to reach speeds of 74 km/h (46 mph) in bursts, the shortfin mako can attain a size of 4 m (13 ft) in length and weigh 570 kg (1,260 lb). The species is classified as Endangered by the IUCN .
Until the 16th century, [7] sharks were known to mariners as "sea dogs". [8] This is still evidential in several species termed "dogfish," or the porbeagle.The etymology of the word shark is uncertain, the most likely etymology states that the original sense of the word was that of "predator, one who preys on others" from the Dutch schurk, meaning 'villain, scoundrel' (cf. card shark, loan ...
Basking shark. The basking shark ( Cetorhinus maximus) is the second-largest living shark and fish, [ 4] after the whale shark. It is one of three plankton-eating shark species, along with the whale shark and megamouth shark. Typically, basking sharks reach 7.9 m (26 ft) in length.
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The kitefin shark or seal shark ( Dalatias licha) is a species of squaliform shark in the family Dalatiidae, and the type species in its genus. It is found sporadically around the world, usually close to the sea floor at depths of 200–600 m (660–1,970 ft). With a sizable oil-filled liver to maintain neutral buoyancy, this shark is able to ...
Risk-reward profile. Another factor that has made Bitcoin the gold standard for crypto investors is its unique risk-reward profile. For much of its existence, it has been uncorrelated with any ...