Because ethology is considered a topic of biology, ethologists have been concerned particularly with the evolution of behaviour and the understanding of behaviour in terms of the theory of natural selection.

Because of the specialized and rare circumstances required for a biological structure to fossilize, only a very small percentage of all life-forms that have ever existed can be expected to be represented in discoveries, and each discovery represents only a snapshot of the process of evolution.

Because many of these reservoirs are found in sedimentary basins, they study the formation of these basins, as well as their sedimentary and tectonic evolution and the present-day positions of the rock units.

Because the mongooses and the mustelids occupy similar ecological niches, convergent evolution has led to some similarity in form and behavior.

Because the Premiership was not intentionally created, there is no exact date when its evolution began.

Because they do not have internal body cavities, for over a century, Platyhelminthes were regarded as a primitive stage in the evolution of bilaterians ( animals with bilateral symmetry and hence with distinct front and rear ends ).

Because the stars were all born at roughly the same time, the different properties of all the stars in a cluster are a function only of mass, and so stellar evolution theories rely on observations of open and globular clusters.

Because of this, evolution selects against synnecrosis and it is uncommon in nature.

Because of the changes going on in the Arctic, future evolution of the Bering Sea climate / ecosystem is uncertain.

Because this history is currently described ( after the first fraction of a second after the origin ) almost entirely in terms of known physical processes and particle physics, the cosmological principle is extended to assert the homogeneity of cosmological evolution across the anisotropy of time: … all points in space ought to experience the same physical development, correlated in time in such a way that all points at a certain distance from an observer appear to be at the same stage of development.

Because of this evolution of terminology in public sector use especially, the term full-cost accounting is now more commonly used in management accounting, e. g. infrastructure management and finance.

Because the elements in these particles were made at different times ( and places ) in the early Milky Way, the set of collected particles further provides insight into galactic evolution prior to formation of our solar system.

Because USB ports are standard features of PCs, they are a natural evolution of conventional serial port technology.

Because the conformal infinity of AdS is timelike, specifying the initial data on a spacelike hypersurface would not determine the future evolution uniquely ( i. e. deterministically ) unless there are boundary conditions associated with the conformal infinity.

Because of the specialized and rare circumstances required for a biological structure to fossilize, only a very small percentage of all life-forms that have ever existed can be expected to be represented in discoveries, and each discovery represents only a snapshot of the process of evolution.

Because of the specificity of Toll-like receptors ( and other innate immune receptors ) they cannot easily be changed in the course of evolution, these receptors recognize molecules that are constantly associated with threats ( i. e., pathogen or cell stress ) and are highly specific to these threats ( i. e., cannot be mistaken for self molecules ).

Because radio galaxies are so bright, astronomers have used them to probe extreme distances and early times in the evolution of the universe.

Because of the large number of generations required for adaptation to occur, evolution experiments are typically carried out with microorganisms such as bacteria, yeast or viruses.

Because the Iskoort represent an evolution of the Yeerks ( from parasitic to symbiotic ), Crayak wants them killed, and The Ellimist wants them preserved.

Because owls depend on their sense of hearing for hunting, this convergent evolution in owl ears suggests that asymmetry is important for sound localization in the owl.

Because of a distinct evolution of feudal society in Poland, the heraldic traditions of Poland differ significantly from those in German lands, France or British Isles.

Because of evolution theory, man is no longer the son of God.

Because of his interest in eugenics and his unorthodox stance on evolution, McDougall has been adopted as an iconic figure by proponents of a strong influence of inherited traits on behaviour, some of whom are regarded by most mainstream psychologists as scientific racists.

Because of the number of legal arguments based on science or scientific evidence, Johnson became interested in the presuppositions of scientific investigation and wrote the book with the thesis that evolution could be " tried " like a defendant in court.

Because administration of the forest highway system is a responsibility of the Secretary of Commerce with maintenance provided by the States and counties, this Development Program for the National Forests does not include estimates of the funds needed to maintain the forest highway system nor to construct the additions to it that are needed.

Because the percentage of each constituent can be varied, with any mixture the entire range of possible variations is called a system.

Because there is no external pressure for the gas to expand against, the work done by or on the system is zero.

Because this system is based on automatic number identification ( not caller ID ) and meant for phone company technicians, the ANAC system works with unlisted numbers, numbers with caller ID blocking, and numbers with no outgoing calls allowed.

Because the WD1770 is capable of single density mode and uses the same IBM360 derived floppy disc format as the Intel 8271 found in the BBC Micro, it was also possible to run a DFS filing system with an alternate ROM, such as the P. R. E. S AP4 interface.

Because the original designer had left the company another employee completely redesigned most of the system, ( adding a display snow remover circuit, true 80 / 64 column text mode support, ( with different size letters for TRS-80 and CP / M mode, so that in TRS-80 mode the full screen was also used, not just a 64x16 portion of the 80x25 screen ) with an improved font set ( adding " gray scale " version of the TRS-80 mozaik graphics and many special PETSCII like characters ), and a more flexible and reliable floppy disk controller and keyboard interface plus many other small improvements ), also an enclosure was developed for the main computer system, ( in the form of a 19-inch rack for the Eurocards ) and for two floppy disk drives and the power supply.

Because field artillery mostly uses indirect fire the guns have to be part of a system that enables them to attack targets invisible to them in accordance with the combined arms plan.

Because boron is produced entirely by cosmic ray spallation and not by stellar nucleosynthesis, it is a low-abundance element in both the solar system and the Earth's crust.

Because of this, it has a transportation system which includes more than of roads, 10 major international airports, 300 smaller airports, of functioning railway track, and more than 300 commercial ports and harbours that provide access to the Pacific, Atlantic and Arctic oceans as well as the Great Lakes and the St. Lawrence Seaway.

Because Cyprus has no working railway system, various other methods of transport are needed to ensure the proper delivery of any cargo, be it human or freight.

Because of the relatively young age and great thickness of the system, Cretaceous rocks crop out in many areas worldwide.

Because chemical diffusion is a net transport process, the system in which it takes place is not an equilibrium system ( i. e. it is not at rest yet ).

Because of this, when the first 386-based system ( the Compaq Deskpro 386 ) hit the market in 1986, it still supported 16-bit slots.

Because the Eurocard system provided for so many modular card sizes and because connector manufacturers have continued to create new connectors which are compatible with this system, it is a popular mechanical standard which is also used for innumerable " one-off " applications.

Because some banks refused to clear checks from certain others during times of economic uncertainty, a check-clearing system was created in the Federal Reserve system.

Because " accidental " prescription pill overdoses have become commonplace, the medical department sends over two cynical, uncaring technicians who use a " Black Cobra " stomach pump to flush the poisons out of Mildred's system and replace her blood with a fresh, mechanical replacement.

Because no national economy in existence fully manifests the ideal of a free market as theorized by economists, some critics of the concept consider it to be a fantasy – outside of the bounds of reality in a complex system with opposing interests and different distributions of wealth.

Because geodetic point coordinates ( and heights ) are always obtained in a system that has been constructed itself using real observations, geodesists introduce the concept of a geodetic datum: a physical realization of a coordinate system used for describing point locations.