Most sharks are ovoviviparous, meaning that the eggs hatch in the oviduct within the mother's body and that the egg's yolk and fluids secreted by glands in the walls of the oviduct nourishes the embryos.

Most genera in this subfamily have one of three easily recognized types of embryos.

Most such embryos are either naturally aborted or are stillborn upon delivery / hatching.

Most often, the embryos are donated after the woman for whom they were originally created has successfully carried one or more pregnancies to term.

Most now admit that Bede, Gildas, Nennius and The Anglo-Saxon Chronicles cannot be the infallible guides to early English history that Guest, Freeman and Green thought them to be.

Most familiar systems cannot achieve negative temperatures because adding energy always increases their entropy.

Most configurations cannot be solved analytically, but can yield numerical solutions through finite element and boundary element methods.

Most intelligent design advocates accept that evolution occurs through mutation and natural selection at the " micro level ", such as changing the relative frequency of various beak lengths in finches, but assert that it cannot account for irreducible complexity, because none of the parts of an irreducible system would be functional or advantageous until the entire system is in place.

Most stainless steel machetes should be avoided, as many high-carbon stainless-steel machetes cannot stand up to repeated impacts, and will easily break if abused.

Most of the interest in this area is in fundamental fields, each of which cannot be described as a bound state of other fields.

Most antibiotics that function on bacterial pathogens cannot be used to treat fungal infections because fungi and their hosts both have eukaryotic cells.

Most quasars cannot be seen with small telescopes, but 3C 273, with an average apparent magnitude of 12. 9, is an exception.

Most modern yachts of 25-55 feet long, propelled solely by mechanical powerplants, cannot carry the fuel sufficient for a point-to-point voyage of even 250-500 miles without needing to resupply ; but a well-prepared sail-powered yacht of similar length is theoretically capable of sailing anywhere its crew is willing to guide it.

Most TVs currently sold in SECAM countries support both SECAM and PAL, and more recently composite video NTSC as well ( though not usually broadcast NTSC, that is, they cannot accept a broadcast signal from an antenna ).

Most CPUs can access individual bytes from each memory address, but they generally cannot access larger units ( 16 bits, 32 bits, 64 bits and so on ) without these units being " aligned " to a specific boundary.

Most 32X games cannot be played unless the distribution region of the game matches the region of the console.

Most machines are designed to defeat this by generating numbers even when the machine is not being played, so the player cannot tell where in the sequence they are, even if he knows how the machine was programmed.

Most philosophical debate has focused on the propositions stating that God cannot exist with, or would want to prevent, all evils ( premises 3 and 6 ), with defenders of theism arguing that God could very well exist with and allow evil in order to achieve a greater good.

Most physicists think that faster-than-light particles cannot exist because they are not consistent with the known laws of physics.

Most types of bacteria cannot change to the endospore form.

Most crayfish cannot tolerate polluted water, although some species such as the invasive Procambarus clarkii are more hardy.

Most sharks need to constantly swim in order to breathe and cannot sleep very long without sinking ( if at all ).

Most commonly, social capital, the sum of social bonds and relationships, has come to be recognized, along with many synonyms such as goodwill or brand value or social cohesion or social resilience and related concepts like celebrity or fame, as distinct from the talent that an individual ( such as an athlete has uniquely ) has developed that cannot be passed on to others regardless of effort, and those aspects that can be transferred or taught: instructional capital.

Most recently, in Philip Morris USA v. Williams ( 2007 ), the Court ruled that punitive damage awards cannot be imposed for the direct harm that the misconduct caused others, but may consider harm to others as a function of determining how reprehensible it was.

Most bills cannot be enacted into law until it has been referred to, acted upon by, and returned from, a standing committee in each house.

Most importantly, once this process has occurred, it cannot be reversed, any more than the duckling can hatch twice.

Most UDS builders / users would say a water pan defeats the true pit BBQ nature of the UDS, as the drippings from the smoked meat should land on the coals, burning up, and imparting a unique flavor one cannot get with a water pan.

Most of the office complexes cannot be seen from the road.

Most vertebrates cannot produce lysine by default ( it is an essential amino acid ).

Most of these, with horrible exceptions, were conceived as is a ship, not as an attempt to quell the ocean of mankind, nor to deny its force, but as a means to survive and enjoy it.

Most species show cyclical parthenogenesis, where asexual reproduction is occasionally supplemented by sexual reproduction, which produces resting eggs that allow the species to survive harsh conditions and disperse to distant habitats.

Most bacteria, when consumed, do not survive the acidic conditions of the human stomach.

Most of the ruins that survive today date from the most intense period of activity at the site in the 6th century BC.

Most of the European rulers did not believe Henry would survive long, and were thus willing to shelter claimants against him.

Most halophiles are unable to survive outside their high-salt native environment.

Most artists, theatres, and orchestras — after struggling to survive the Depression — found these inducements hard to refuse.

Most of his works are lost, but two apologies and a dialogue did survive.

Most Protea species can be placed in one of two broad groups according to their response to fire: reseeders are killed by fire, but fire also triggers the release of their canopy seed bank, thus promoting recruitment of the next generation ; resprouters survive fire, resprouting from a lignotuber or, more rarely, epicormic buds protected by thick bark.

Most of his films still survive.

Most of the languages spoken today in the Solomon Islands derive from this era, but some thirty languages of the pre-Austronesian settlers survive ( see East Papuan languages ).

Most of the eastern Australian species survive in uplands, but only a few of the Western Australian species native to the Stirling Ranges-B. solandri, B. oreophila, B. brownii and B. montana-survive at high altitudes.

Most of these miniatures were destroyed by fire in 1904 and survive only in photographs and copies.

Most liens, however ( such as real estate mortgages and security interests for car loans ), survive.

Most tissues and organs of the body can survive clinical death for considerable periods.

Most of the texts first translated at this time survive in only one manuscript each.

Most material from the 1960s also only survive as telerecordings.

Most missing works are described by works or compilations that survive, such as the Naturalis Historia of Pliny the Elder or the De Architectura by Vitruvius.

Most of the buildings along Warwick Road date from this period and later but a few earlier cottages also survive.

Most of the gastropods of the Palaeozoic era belong to primitive groups, a few of which still survive today.

Most of the DuMont episodes survive at the UCLA Film and Television Archive, while the 39 filmed episodes survive intact.

Most patients with esophageal carcinoma survive less than 1 year.

Most of the kinescopes of the show were discarded by NBC, and so few copies of the show survive.

Most species are able to survive in a variety of habitats.