...The two constant factors were the river and the great dry country on either side... 
Stewart Edward White 「African Camp Fires」
...Freedom, expansion, opportunity, and, above all, peace and repose,alone can teach us the real dominant factors of human nature and allits wonderful possibilities...
Emma Goldman 「Anarchism and Other Essays」
...Alfred Blaschko, in PROSTITUTION IN THE NINETEENTH CENTURY, iseven more emphatic in characterizing economic conditions as one ofthe most vital factors of prostitution...
Emma Goldman 「Anarchism and Other Essays」
...One of the most important yet undeterminable factors of the gravity of snakebite is the amount of venom injected into the victim...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Perhaps one of the most important factors in the outcome of snakebite is the treatment...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Butthe farmer's practical problem in disposing of his eggs has some veryimportant factors which do not appear in a simple arithmetical problem...
John H. Robinson 「Our Domestic Birds」
...All these disturbing factors make it necessary to examine a large number of nests of the Three-pronged Osmia, if we would obtain a definite result...
J. Henri Fabre 「Bramble-bees and Others」
...The insect's industry, variable in its details by sudden, individual and non-transmissible innovations, gives the lie to the two great factors of evolution: time and heredity...
J. Henri Fabre 「Bramble-bees and Others」
...Several possible factors appear reasonablyclear...
Francis Harper 「The Barren Ground Caribou of Keewatin」
...This mortality probably is related to two factors,negative human attitudes toward wolves andaccessibility of humans to wolf range...
Thomas F. Weise 「An Experimental Translocation of the Eastern Timber Wolf」
...Young trees and shrubs sprang up in thickets, the numbers andkinds depending on amount of shade, seed sources, soil, moisture, andvarious other factors...
Henry S. Fitch 「The Forest Habitat of the University of Kansas Natural History Reservation」
...The various mortality factors which regulate the numbers of opossumsare not well known, and even less is known regarding the relativeimportance of the factors...
Henry S. Fitch 「Ecology of the Opossum on a Natural Area in Northeastern Kansas」
...In them, pale soil and low relative humidity are importantpassive factors of selection that give adaptive value to the palecolors of pelage of both infernatis and handleyi...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...Now that the important ecological factors of the major environmentshave been outlined, we may examine the local distribution of amphibiansin each of these...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
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