Several related tasks must be carried out if self-sustaining growth is to be achieved.

Several related flagellates, such as Perkinsus and Colpodella have structures similar to the polar ring and were formerly included here, but most appear to be closer relatives of the dinoflagellates.

Several concepts that provide alternative definitions for the reaction mechanisms involved and their application in solving related problems exist.

Several cultures have myths related to lunar eclipses.

Several other experiments followed, with André-Marie Ampère, who in 1820 discovered that the magnetic field circulating in a closed-path was related to the current flowing through the perimeter of the path ; Carl Friedrich Gauss ; Jean-Baptiste Biot and Félix Savart, both of which in 1820 came up with the Biot-Savart Law giving an equation for the magnetic field from a current-carrying wire ; Michael Faraday, who in 1831 found that a time-varying magnetic flux through a loop of wire induced a voltage, and others finding further links between magnetism and electricity.

Several types of " mania " such as kleptomania and pyromania are related more closely to obsessive-compulsive disorder than to bipolar disorder, depending on the severity of these disorders.

Several sites in Ireland are especially related to the Samhain festival.

Several Western scholars have presented suggestive evidence that Tai – Kadai is related to or a branch of the Austronesian language family.

Several large, Fortune 500 automotive related companies had their headquarters in Toledo.

There is no explanation for the particular values that physical constants appear to have throughout our universe, such as Planck's constant h or the gravitational constant G. Several conservation laws have been identified, such as the conservation of charge, momentum, angular momentum and energy ; in many cases, these conservation laws can be related to symmetries or mathematical identities.

Several other names for related or similar dishes existed in Europe, such as the 13th century Danish hwit moos (" white mush "), the Anglo-Norman blanc desirree (" white Syrian dish ") and Dutch calijs ( from Latin colare, " to strain ").

Several measures of digital technology are improving at exponential rates related to Moore's law, including the size, cost, density and speed of components.

Several curves are related to the cycloid.

Several aspects of ornithology differ from related disciplines, due partly to the high visibility and the aesthetic appeal of birds.

Several towns with names possibly related to ' Alan ', such as Allainville, Yvelines, Alainville-en Beauce, Loiret, Allaines and Allainville, Eure-et-Loir, and Les Allains, Eure, are taken as evidence that a contingent settled in Armorica, Brittany.

Several theorems related to the triangle were known, including the binomial theorem.

Several notable Russian linguists, such as S. A. Starostin and V. V. Ivanov, have claimed that the Hurrian and the Hattic were related to the Northeast Caucasian languages.

Several related traditions exist, some adapted to Qur ' ānic material, some not.

Several species of the genus Achatina and related genera are known as giant African land snails ; some grow to from snout to tail, and weigh.

Several other Elves, Dwarves and Men also arrived at Rivendell on separate errands ; at the Council of Elrond they learned that all of their errands were related to the fate of the One Ring, and they should decide what to do about it.

Several native species are related to North American species, including the Eastern Bluebird ( Sialia sialis ), and the White-eyed Vireo ( Vireo griseus bermudianus ).

Several other operating entities related to the venue share its name.

Several people, related to Lê by blood, were appointed to the propaganda and cultural sector of the state.

Several related Chumashan languages were spoken.

Several popular characters of the period received the cartoon treatment.

* Several characters in Spriggan such as the Trident Corporation's agents ( except Iwao Akatsuki ), including ex-Machiner's Platoon agent Ironarm, have prosthetic limbs.

Several single packs and multi-figure sets by Jesco ( later Trendmasters ), as well as a 50th anniversary collection, have been made of the Gumby characters.

Several of the characters spoke in stereotypical German-accented English.

Several characters are never named during the film but do have names that are used in the tracklisting for the soundtrack album and elsewhere.

Several later Revelation Space novels add additional details of history of groups and characters on Mars.

Several characters, including Hamlet and Bertram ( in All's Well that Ends Well ), were, he believed, self-portraits.

Several Cardassian characters, including Elim Garak and Gul Dukat, are prominently featured.

Several characters who are former SCA members attribute their survival to their SCA experience.

Several characters become addicted to viewing their own dreams, while Claire's estranged lover, a novelist, remains unaffected.

Several games have also featured modes that involve teams of characters ; players form " tag teams " to fight matches in which combat is one-on-one, but a character may leave the arena to be replaced by a team mate.

Several historical characters listed in the credits do not actually appear in the film, they are said to have been in scenes cut before release.

Several protagonists come to the realization that they are merely fictional characters, or at least begin to question the reality of their situation.

Several of the characters from Illuminatus !, for example, Markoff Chaney (" The Midget ") and Epicene Wildeblood, return in Wilson's Schrödinger's Cat Trilogy, which also carries on some of its themes.

Several of the characters appear in the two previous books, including Armand, Daniel ( the " boy reporter " of Interview with the Vampire ), Marius, Louis, Gabrielle and Santino.

* Several heroes of the 1990s, including Cable and many Image Comics characters, rejected the traditional superhero outfit for costumes that appeared more practical and militaristic.

Several new characters were added to the series in this sequel: A thief called Paul " Lupin " Toledo, a dog called Whiskey and Wilson, a shot down pilot claiming to be from the Light Brigade.

Several characters from The Hitchhiker's Guide to the Galaxy were also featured, played by the original television series actors.

Several other Western styles use the same tools and practices, but differ by the characters set, and by stylistic preferences.

" Several additional characters are referred to regularly throughout the series, but are mostly unseen.

Several Abenaki characters and much about their 18th-century culture are featured in the Kenneth Roberts novel Arundel ( 1930 ).

Several recurring characters include Naomi Wildman, the " Captain's Assistant " and daughter of Ensign Samantha Wildman, and the Borg children, Icheb, Mezoti, Azan, and Rebi.

Several regular symbols are conventionally used in ASCII-only text or another environments where bullet characters are not available, such as * ( asterisk ),-( hyphen ),.

Several characters are based on real country music figures: Henry Gibson's Haven Hamilton is a composite of Roy Acuff, Hank Snow, and Porter Wagoner ; Ronee Blakely's Barbara Jean is based on Loretta Lynn ; the black country singer Tommy Brown ( played by Timothy Brown ) is based on Charley Pride ; and the feuding folk trio is based on Peter, Paul and Mary ; within the trio, the married couple of Bill and Mary were inspired by Bill Danoff and Taffy Nivert, who later became Starland Vocal Band .< ref >