1956. A population of Uranotaenia anhydor from death valley, with descriptions of all stages and discussion of the complex (Diptera: Culicidae). Ann. Entomol. Soc. Am. 49: 105Ð132.Belkin, J.N. and W.A. McDonald. 1956. A population of Uranotaenia anhydor from Death Valley, with ...
We derive a nonlinear integro-partial differential equation which describes the logistic growth of human population with migration. The equation is based upon the theory of logistic growth of population and upon the theory of migration in quantitative sociodynamics. We prove that the Cauchy problem fo...
Utah County, Utah, and more particularly the Utah Valley area, has undergone an enormous change during the last forty years. Rapid growth and urbanization brings with it the problems of urban sprawl. Controlling this sprawl is determined often times by an effective growth policy. Mapping and anal...
Based on the current very high birth rates and declining death rates in the Islamic Republic of Afghanistan, the population is expected to skyrocket in the upcoming years with an approximate increase of about 4% year over year. Geography of Afghanistan Bordering Pakistan in the south and east, ...
The magnitude and frequency of extreme precipitation events in the early twenty-first century have already proven to be increasing at a rate more quickly than previously anticipated. Currently, the biggest consequence of the change in extreme precipitation is the lack of a climate-adjusted national ...
AsianPrunus armeniaca(Par) natural population. NorthernP. armeniacapopulations (N_Par) are located over the Zailiysky Mountains while SouthernP. armeniaca(S_Par) populations lay over the foothills of the Ferghana valley.cPictures of the species analysed.dCircos plot showing features of the Marouch...
Density of fishers and the efficacy of relative abundance indices and small‐scale occupancy estimation to detect a population decline on the Hoopa Valley ... We used a markresight design to calculate density estimates of fisher (Martes pennanti), a candidate for listing under the United States ...
Like the change of natural population increase rate the changes in total fertility and crude birthrate also can be divided into 4 stages with 2 peaks 1 valley and 1 decline. The crude birthrate and total fertility rate for childbearing women showed a decline by a big margin in the 1970s ...
too many; much too ()2.—Because of the ___ petrol(汽油) price, fewer and fewer people will choose to own a car, I think. — I have the same idea as you. A. increased B. increasing C. improved D. improving ()3. As soon as they arrived in the big city, they foun...
Steppe lands in Europe are critically affected by habitat loss and fragmentation, and hold over 50% of IUCN Red List bird species in Europe. Dupont’s Lark is a threatened steppe-specialist passerine whose European geographic range is restricted to Spain