“人口增长率”用英语怎么说? 作为人口大国,我国很重视Population growth rate(人口增长率)。 它是反映人口发展速度和制定人口计划的重要指标,也是计划生育统计中的一个重要指标。人口的力量正在把世界分成两部分:人口增长缓慢的地区,生活条件正在得到改善;人口增长迅速的地区,...
The model predicts that over most of history, the growth rate of population will be proportional to its level. Empirical tests support this prediction and show that historically, among societies with no possibility for technological contact, those with larger initial populations have had faster ...
3) 根据图,时间 t 接近无穷时, y 接近 a (carrying capacity), rate (dy/dt) 接近于0.When y = 0 or a, rate (or slope) = 0. 4) When population = a/2, rate = max rate.题目说到 max rate of growth 时,看清楚问此时的 population 还是 rate. 5) 给了某个时间的 population, 求此时...
population growthreproductive ratesurvivalvital ratesFishers (Pekania pennanti) are a forest-dependent carnivore of conservation concern in British Columbia, Canada. Ecological, spatial, and genetic evidence suggests that there are 2 distinct populations (Boreal and Columbian) that occur in forests at ...
If the carrying capacity of the population is 2400 rabbits, which of the following differential equations best models the growth rate of the rabbit population with respect to time t, where k is a constant? dP (A) = 2400 − kP dt dP (B) = k (2400 − P ) dt dP 1 (C) = k ...
We analyze the role of demographic changes in the economic development process by studying the transitional and the long-run impact of both the rate of population growth and the initial population size on the levels of per capita human capital and income. We do that in an enlarged Lucas–...
According to provincial statistical data, last year, Zhejiang had 383,000 births and 440,000 deaths, and a net inflow of 557,000 persons; Jiangsu also experienced a negative natural population growth rate, while its popu...
It has a population size of This concept of providing a few guests with a friendly approximately 7 million, representing 16% (the third and interesting atmosphere is the heart of BB’s largest) of the South African population. The non-urban popularity. BB’s add to the tourism diversity of...
If P t is the size of a population at time t, which of the following differential equations describes linear growth () in the size of the population? dP (A) 200 dt dP (B) 200t dt dP 2 (C) 100t dt dP (D) 200P dt dP 2 (E) 100P dt 3 24. Let f be a differentiable ...
80. The populationreached a plateauin 1990, before declining suddenly in 2001. 在2001年人口急剧下降之前1990年的人口数达到高原。 81. The annual population growth ratefluctuatedbetween 1% and 2% during the ten-year period. 在这个10年间,每年的人口增长率在1%和2%之间波动。 82. There werestrong flu...