Two locations on the Moon were given primary consideration for exploration by the Apollo 16 expedition, the Descartes Highlands region west of Mare Nectaris and the crater Alphonsus.

It has been argued by John Mosier that, while the French soldiers in 1940 were better trained than German soldiers, as were the Americans later, and the German army was the least mechanised of the major armies, its leadership cadres were both larger and superior and their high standards of leadership were the primary reason for the successes of the German army in World War Two as it had been in World War One.

Two of the primary methods for identifying rocks in the laboratory are through optical microscopy and by using an electron microprobe.

Two of these six helices are separated by a loop that lines the pore and is the primary determinant of ion selectivity and conductance in this channel class and some others.

Two of the Giants " Giant Quarterbacks " logos ; primary logo 1956 – 60 ( top ), and secondary logo 2000 – 2009.

Two water molecules are oxidized by four successive charge-separation reactions by photosystem II to yield a molecule of diatomic oxygen and four hydrogen ions ; the electron yielded in each step is transferred to a redox-active tyrosine residue that then reduces the photoxidized paired-chlorophyll a species called P680 that serves as the primary ( light-driven ) electron donor in the photosystem II reaction center.

Two of the primary architects of the Aztec empire were the half-brothers Tlacaelel and Montezuma I, nephews of Itzcoatl.

Two primary authorities granted to the Army Corps of Engineers by Congress fall under Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act.

Two nationalism's primary myths are connected with beliefs in:

Two primary methods have been used to define and locate the G-Spot as a sensitive area in the vagina:

The golden age began with the 4th dynasty, which seems to have furthered the primary role of Memphis as a royal residence where rulers received the double crown, the divine manifestation of the unification of the Two Lands.

Two miles ( 3 km ) west of Marsing, Highway 55 connects with U. S. Route 95, the primary north-south route for the state.

Two of which are primary schools and the other is a secondary school.

The One Hundred and Two River, located on the eastern side of the city, is the primary source of power and water for the city.

Two rounds are held, with the top two vote-getters in the primary advancing to the general election.

Two candidates, Thomas Hawk and Sam Ausband, are competing in the 2011 Republican primary to challenge Cloninger.

Two private primary schools, Bowling Green Christian Academy and the Montessori School of Bowling Green, and one parochial, St. Aloysius, also call Bowling Green home.

Two primary schools, Harlean Beal Elementary School and David K. Sellars Elementary School, serve separate areas within the FWISD section of Forest Hill.

Two things are characteristic for the pressurized water reactor ( PWR ) when compared with other reactor types: coolant loop separation from the steam system and pressure inside the primary coolant loop.

Two other large notable holding companies are United Continental Holdings and AMR Corporation, whose primary purposes are to wholly own United Airlines and American Airlines, respectively.

Two assumptions underpinned the British approach to HAA fire ; first, aimed fire was the primary method and this was enabled by predicting gun data from visually tracking the target and having its height.

Two public primary school districts serve Bayside.

Two primary proposals emerged, one from New Deal Senator Harley M. Kilgore and another from Vannevar Bush.

Two other primary choices, Steve Morse ( Dixie Dregs, Kansas ( band ), Deep Purple ) and Jim Matheos ( Fates Warning ) were also unavailable.

Two factors had contributed to growing unrest in the area north of Danube.

Two other factors significantly affect glucose measurement: hematocrit and delay after blood drawing.

Two factors determine the structure and behavior of the magnetosphere: ( 1 ) The internal field of the Earth, and ( 2 ) The solar wind.

Two major factors influence activity of MAP kinases:

Two distinguishing factors are steel's increased rust resistance and better weldability.

* November 2007: Human induced pluripotent stem cells: Two similar papers released by their respective journals prior to formal publication: in Cell by Kazutoshi Takahashi and Shinya Yamanaka, " Induction of pluripotent stem cells from adult human fibroblasts by defined factors ", and in Science by Junying Yu, et al., from the research group of James Thomson, " Induced pluripotent stem cell lines derived from human somatic cells ": pluripotent stem cells generated from mature human fibroblasts.

Two major factors affecting population growth are fertility rates and mortality rates.

Two factors played a role.

Two factors are considered here: How close the predator and prey are physically ( in the latter two cases the term prey may be replaced with host ).

Two risk factors for contracting toxoplasmosis are:

Two important contributing factors to the change in mentality were the change in the economic structure of society.

Two factors were responsible for the exact location of the village.

Two long-time Faribault retailing / shopping institutions closed: the oldest and a long-time Central Avenue fixture, Jim & Joe's Clothiers, closed after 125 + years of service due to a number of related factors, primarily centering around the standard issues facing most small-town, family-owned retailers.

Two factors worked against this: the War of 1812, preceded by a US embargo against trade with Canada, which damaged the upstate economy ; and the construction of the Erie Canal in 1824, which enabled transportation between areas accessible to the Great Lakes and New York City.

Two factors in each of these locations are history and geography.

Two other important factors should be mentioned: Relander was an active member of the " Suojeluskunta " ( Civil Guard ) voluntary military organization and he accepted the right-wing worldview typical of White veterans of the Civil War clearly more wholeheartedly than Ryti did.

Two core strategic factors came into play: ( 1 ) the use of shared components in AMC products and ( 2 ) a refusal to participate in the Big Three's restyling race.

Two main factors caused the formation of WSC — the widespread view that players were not paid sufficient amounts to make a living from cricket, and that Packer wished to secure the exclusive broadcasting rights to Australian cricket, then held by the Australian Broadcasting Commission ( ABC ).

Two factors that cause self-view to remain unrealistic are dysfunctional interactions with parents that can be either excessive attention or a lack thereof.

Two major factors laid the foundations of British rule and the eventual establishment of a colony on the Gold Coast: British reaction to the Asante wars and the resulting instability and disruption of trade, and Britain's increasing preoccupation with the suppression and elimination of the slave trade.

Two main factors have led to the recent decline of the straight-6 in automotive applications.

Two factors common to all savanna environments are rainfall variations from year to year, and dry season wildfires.

Two factors have effected Warwick's built environment: the Great Fire of 1694 and the lack of industrialisation.

Two more factors, the environmental and legal factor, are defined within the PESTEL analysis ( or PESTLE analysis ).