Historically, some ideas have been advanced to explain the apparent hairlessness of humans, as compared to other species.

Historically, model organisms include a handful of species with extensive genomic research data, such as the NIH model organisms.

Historically, this has led to various growth stages ( including growth stages of related pterosaurs ) being mistaken for new species of Pterodactylus.

Historically, Europe's deer species shared their deciduous forest habitat with other herbivores such as the extinct tarpan ( forest horse ), extinct aurochs ( forest ox ), and the endangered wisent ( European bison ).

Historically, the tree's girth allowed for wide boards from traditional mahogany species.

Historically, the sea has had rich marine life, both in variety, with over 80 fish and 300 invertebrate species identified, and in numbers.

Historically 46 species of native mammal are known to have been living in the Uluru region ; there are currently 21 according to recent surveys.

Historically, it has been known to attain heights over making it one of the tallest tree species in the world and the tallest flowering plant.

Historically, there have been four species of amphibia, twelve species of reptiles, thirteen species of fish, 152 species of birds, and forty-two species of mammals found in the environs of Utah Lake.

Historically commonly available species of Ancistrus were Ancistrus cirrhosus and Ancistrus temminckii, other species are now available though exact identification is difficult.

Historically numerous small boats caught tuna, wahoo, billfish and many other species.

Historically, the description of a bacterium lacking a cell wall was sufficient to classify it to the genus Mycoplasma and as such it is the oldest and largest genus of the class with about half of the class ' species ( 107 validly described ), each usually limited to a specific host and with many hosts harboring more than one species, some pathogenic and some commensal.

Historically, this species was not significantly targeted by commercial whalers, but became more important in the 1970s as the industry depleted other targets.

Historically, the discovery of the species as Lophochroa goffini is attributed to Otto Finsch in 1863.

Historically, it is known as the right whale family, as it was thought to contain only species of right whales.

: Historically both pinniped species were abundant natives in the harbor until hunting and other human activity extirpated them from the area by at least the late 19th century.

Historically, hunting and habitat loss has decimated alligator populations throughout their range, and it was doubted as to whether the species would survive.

Historically, many species of Puntius have been classified in several genera, including Barbus.

Historically, infant mortality claimed a considerable percentage of children born, in the 1850s in America it was estimated to be 216. 8 per 1, 000 for whites and 340. 0 for African Americans but rates have significantly declined in the West in modern times.

Historically, vacationers tended to visit the hotels, reachable by horse-drawn carriage from the Randolph train station ; but as the automobile became more popular, the hotels declined and private vacation homes became more prevalent.

Historically the town was known as a major centre for the production of textiles ( mainly linen ) after the industrial revolution and it continued to be a major producer of textiles until that industry steadily declined in the 1990s and 2000s.

Historically, the US has incurred debt during wars and recessions, but then debt subsequently declined afterwards.

Historically and culturally, Gateshead has been considered generally subordinate to neighbouring Newcastle upon Tyne This was particularly so in the post-war years, when the industrial economy of the town declined markedly and contracted to a fraction of its pre-war counterpart.

Historically, Glanton was a relatively industrial village, although in recent years the level of industry has declined.

Historically, the star was frequently used in celestial navigation in the maritime trade, because it is listed as one of the 57 navigational stars.

Historically, the First Army was the most politically significant because of Rio de Janeiro's position as the nation's capital through the 1950s.

Historically, the electron volt was devised as a standard unit of measure through its usefulness in electrostatic particle accelerator sciences because a particle with charge q has an energy E = qV after passing through the potential V ; if q is quoted in integer units of the elementary charge and the terminal bias in volts, one gets an energy in eV.

Historically, reforms have taken different forms because the motivations of reformers have differed.

* Historically, valve amplifiers often used a class-A power amplifier simply because valves are large and expensive ; many class-A designs use only a single device.

Historically they were sometimes called Feynman-Dyson diagrams or Dyson graphs, because when they were introduced the path integral was unfamiliar, and Freeman Dyson's derivation from old-fashioned perturbation theory was easier to follow for physicists trained in earlier methods.

Historically, hedge funds have been exempted from certain registration and reporting requirements that apply to other investment companies, because in most jurisdictions regulation permits investments in hedge funds by only " qualified " investors who are able to make an informed decision about investment decisions without relying on regulatory oversight.

Historically Maldives has had a strategic importance because of its location on the major marine routes of the Indian Ocean.

Historically, mainframes acquired their name in part because of their substantial size, and because of requirements for specialized heating, ventilation, and air conditioning ( HVAC ), and electrical power, essentially posing a " main framework " of dedicated infrastructure.

Historically, the original Macrovision technology was considered a nuisance to some specialist users because it could interfere with other electronic equipment.

Historically, mycology was a branch of botany because, although fungi are evolutionarily more closely related to animals than to plants, this was not recognized until a few decades ago.

Historically Llandaff was informally known as a " city " because of its status as the seat of the Bishop of Llandaff.

Historically, the English language name for the city, " Kishinev ", was based on the modified Russian one because it entered the English language via Russian at the time Chișinău was part of the Russian Empire ( e. g. Kishinev pogrom ).

Historically optical microscopes were easy to develop and are popular because they use visible light so that samples may be directly observed by eye.

Historically, the conservation of mass and weight was obscure for millennia because of the buoyant effect of the Earth's atmosphere on the weight of gases.

Historically it was used to claim ownership of slaves or to punish criminals, but as a form of body art, strike branding is less preferable to other types because it is not precise and tends to spread greatly on healing, and is not advisable for curved areas of the body.

Historically the term aliasing evolved from radio engineering because of the action of superheterodyne receivers.

Historically, because large groups of people have been able to bring about dramatic and sudden social change in a manner that bypasses established due process, they have also provoked controversy.

Historically, the probing process was performed in two steps because of the relative ease of producing primary and secondary antibodies in separate processes.

Historically, the NDP's popular vote does not translate into a proportional number of seats because of scattered support.

Historically, copper was often used for fireboxes ( particularly for steam locomotives ), because of its better formability and higher thermal conductivity ; however, in more recent times, the high price of copper often makes this an uneconomic choice and cheaper substitutes ( such as steel ) are used instead.

Historically, salami has been popular among Southern European peasants because it can be stored at room temperature for periods of up to 30 – 40 days once cut, supplementing a possibly meager or inconsistent supply of fresh meat.

Historically, the Spanish-speaking population increased because of territorial annexation of lands claimed earlier by the Spanish empire and by wars with Mexico and by land purchases, while modern factors continue increasing the size of this population.

Historically, Pascal's Wager was groundbreaking because it charted new territory in probability theory, marked the first formal use of decision theory, and anticipated future philosophies such as existentialism, pragmatism, and voluntarism.