Because all clades are represented in the southern hemisphere but many not in the northern hemisphere, it is natural to conjecture that there is a common southern origin to them.

Because of Finland's northern location, winter is the longest season.

Because of its northern latitude, daylight extends 17 hours in midsummer, to only around 7 hours in midwinter.

Because most Mandarin dialects are found in the north, the group is also referred to, particularly among Chinese speakers, as the " northern dialect ( s )" ().

Because of the landlocked, hilly terrain common plant foods in Massachusetts are similar to those of interior northern New England-including potatoes, maple syrup, and wild blueberries.

Because of their rugged topography and the rigours of the climate, the northern highlands and the Himalayas to the east have been formidable barriers to movement into Pakistan throughout history.

Because the territorial boundary line between the U. S. and Canada ran through the middle of Lake Erie and then up the Detroit River, combined with the prevailing belief regarding the location of the southern tip of Lake Michigan, the framers of the 1802 Ohio Constitution believed it was the intent of Congress that Ohio's northern boundary should certainly be north of the mouth of the Maumee River, and possibly even of the Detroit River.

Because of their popularity in northern China, stick-handled woks are often referred to as " pao woks " or " Peking pans ".

Because the Fugitive Slave Law had made the northern United States more dangerous for escaped slaves, many began migrating further north to Canada.

Because of the increase in wealth of the trading cities of northern Italy, there occurred a revival in the study of the Justinian Code.

Because of the need for maximum cooling of the water vapor to produce these clouds, their distribution tends to be restricted to polar regions of the Earth during the respective summer seasons in the northern and southern hemispheres.

Because of various factors – the difficulty of crossing the Yellow River, the increased development of an alternative sea route for grain-ships, and the opening of the Tianjin-Pukou Railway and the Beijing-Hankou Railway – the canal languished and for decades the northern and southern parts remained separate.

Because the Kotsoteka and Yamparika lived in the northern part of the Comancheria they were called Northern Comanches.

Because of their prolific and predatory nature, laws have been enacted in some places to help stop the spread of northern pike outside of their native range.

Because Pinal County is located between Arizona's two largest metropolitan regions, Phoenix and Tucson, suburban growth southward from greater Phoenix has begun to spread into the northern parts of the county ; similarly, growth northward from Tucson is spreading into the southern portions of the county.

Because it falls near the equinox, it is associated in the northern hemisphere with the beginning of autumn and the shortening of days.

Because of a sandbank, the northern one is very narrow and shallow, 100 m wide and just 1 m deep in places, impassable to large boats.

Because these books deal with farm life in northern Minnesota, they reflect Weaver's background.

Because Summit Lake is located on a divide, part of its flow exits from the northern end of the lake through Cedar Swamp.

Because of disputes between Pennsylvania and Connecticut over the area of land that is now northern Pennsylvania, the land deed issued to Clark was deemed invalid by the Luzerne County land grant office.

Because it is a prominent landfall on the route from northern Europe to the Mediterranean, several nearby battles are named the " Battle of Cape Finisterre ".

Because of a sewer at the northern end and the District Railway to the south it was decided to build the subway for single-deck trams only.

Because of its access to the river Vorma and the lake Mjøsa has long provided a thoroughfare to northern parts of inland Norway.

Because of its northern latitude, UNBC is a member of the University of the Arctic.

Because Messier compiled his catalog from a northern latitude, not all of the Messier objects are visible from the southern hemisphere.

Because ending the game is optional, and a player may not realize that he can end it, it is unethical to say " good game ", or in any other way indicate that the game could be ended, until after a player actually has ended the game.

Because Bulgarian industry was configured to Soviet markets, the end of the Soviet Union and the Warsaw Pact caused a severe crisis in the 1990s.

Because the breasts are principally composed of adipose tissue, which surrounds the milk glands, their sizes and volumes fluctuate according to the hormonal changes particular to thelarche ( sprouting of breasts ), menstruation ( egg production ), pregnancy ( reproduction ), lactation ( feeding of offspring ), and menopause ( end of menstruation ).

Because very few wells and springs have water throughout the year, the herders leave with the end of the rains, turning over the land to the antelopes, gazelles, and ostriches that can survive with little groundwater.

Because of the switch to Portland cement, by the end of the 1920s of the 15 Rosendale cement companies, only one had survived.

Because of the ongoing war in Brazil the situation for the WIC in 1645, at the end of the charter, was very bad.

Because Ethernet was able to adapt to market realities and shift to inexpensive and ubiquitous twisted pair wiring, these proprietary protocols soon found themselves competing in a market inundated by Ethernet products and by the end of the 1980s, Ethernet was clearly the dominant network technology.

Because his leave was coming to an end very soon, they married quickly on 16 August at St Jude's Church, Kensington, and then honeymooned in Ryde on the Isle of Wight, before heading via France to Malaya.

Because gametes end up with a random mix instead of a pre-defined " set " from either parent, gametes are therefore considered assorted independently.

Because prokaryotic mRNA does not need to be processed or transported, translation by the ribosome can begin immediately after the end of transcription.

Because open clusters tend to be dispersed before most of their stars reach the end of their lives, the light from them tends to be dominated by the young, hot blue stars.

Because the area of the fossil site was four hundred kilometers removed from the coastline and there were no indications of large rivers or deep lakes nearby at the end of the Cretaceous, Lawson in 1975 rejected a fish-eating lifestyle, instead suggesting that Quetzalcoatlus scavenged like the Marabou Stork, but then on the carcasses of titanosaur sauropods such as Alamosaurus.

Because both ends of the RS-232 circuit depend on the ground pin being zero volts, problems will occur when connecting machinery and computers where the voltage between the ground pin on one end, and the ground pin on the other is not zero.

Because the end of the Cold War in 1991, mooted the USSR, the Iron Curtain countries, and Russia as credible enemies of democracy, espionage novelists were at a ( temporary ) loss for nemeses.

Because of injuries to defensive linemen ( at the beginning of the season the Dolphins were down to four healthy defensive linemen ) defensive coordinator Bill Arnsparger created what he called the " 53 " defense, in which versatile Bob Matheson ( number 53 ) would be used as either a defensive end in the standard 4-3 defense or as a fourth linebacker in a 3-4 defense, with Manny Fernandez at nose tackle.

Because of the operation of Commodore floppy drives, one write protection scheme would cause the floppy drive head to bang against the end of its rail, which could cause the drive head to become misaligned.

Because the western end of Lake Erie offered the shortest overland route to the frontiers of Indiana and Illinois, Maumee Harbor was seen as a site of immediate importance and great value.

Because both lengths of dissimilar metals experience the same temperature gradient, the end result is a measurement of the difference in temperature between the thermocouple junction and the reference junction.

Because of Rey's book, many amateur astronomers have come to accept Rey's star chart interpretation of Ursa Major, dropping the idea of the Big Dipper's " handle " as being the hind end of the bear, with a non-natural " tail " extending rearwards.

Because Internet Service Providers ( ISPs ) pay the long-distance carriers for access to their infrastructure, and share the circuits among many users through packet switching, the end Internet user avoids having to pay usage tolls to anyone other than their ISP.

Because it normally has a positively charged nitrogen at its end, lysine can bind the negatively charged phosphates of the DNA backbone.

( Because the film was made during World War II, the film also anachronistically added some morale-boosting lyrics at the end of the song as part of Warner Bros .' wartime propaganda ).

Because only a fraction of energy is passed on to the next level, this hierarchy of predation must end somewhere, and very seldom goes higher than five or six levels, and may go only as high as three trophic levels ( for example, a lion that preys upon large herbivores such as wildebeest which in turn eat grasses ).

Because this presents a significant advantage to the team winning the coin toss to decide who receives the first overtime possession, the NFL moved in 2011 to require that if both teams have not had possession of the ball prior to the first score, then the team who does have possession must score a touchdown to end the game, preventing the team winning the coin toss from making a much shorter drive down the field and kicking a " golden goal " without the other team having a chance to touch the ball.

Because of the geometric relationship, the Doppler shifted geometric chirp will effectively start at a different frequency ( multiplied by a constant ), but follow the same pattern of exponential frequency increase, so the end of the original wave, for instance, will still overlap perfectly with the beginning of the reflected wave, and the magnitude of the correlation will be high for that section of the wave.