Define population. population synonyms, population pronunciation, population translation, English dictionary definition of population. n. 1. a. All of the people inhabiting a specified area. b. The total number of such people. 2. The total number of inha
Over the past decade, the US population grew at the slowest rate since the 1930s, the Census Bureau said Monday, a remarkable slackening that was driven by a leveling off of immigration and a declining birthrate. The bureau also reported changes to the nation's political map: The long-runn...
During the 50s the considerable resources of the US research and development began to turn toward improvements in contraceptive methods. By the end of the decade a viable contraceptive pill had been developed and tested and the earliest IUD had been considerably improved. At the same time means ...
aThe dataset also allowed us to examine one of the key concepts of ES, homeostasis, for more elements than is normally possible. 数据集比通常可能的也允许我们审查其中一个ES,同态的关键概念,为更多元素。 [translate] a他的声音很有爆发力 正在翻译,请等待... [translate] a你家人呢? 正在翻译,请...
Sex allocation theory proposes that parents should bias the sex ratio of their offspring if the reproductive value of one sex is greater than that of the other. In the monogamous blue tit (Parus caeruleus), males have a greater variance in reproductive success than females, and high-quality ...
Over three-quarters of the U.S. population will likely experience this new normal occurrence of extreme precipitation. As much as one-third of the population is expected to experience the current definition of a 1-in-100-year storm as often as three times in their lifetime. Additionally, ...
Because we sexed only 57% of individuals over their lifetime, we treated sex as an uncertain state in our model. Our goals were to provide insight into the population dynamics of this declining colony, to inform conservation of this species, and to highlight the importance of considering sex...
(1) 当表示一个城市、地区或国家有多少人口时,常用以下两种结构,即“the population of + 某地 + is + 数词”或“某地 + has a population of + 数词”。例如: The population of London is over ten million. = London has a population of...
If we want to prevent a population explosion, we should take action now -or assist the poorer countries to do so. They need better government, better institutions, better labor and capital markets, better schools. Anything that increases the value of womens time and adds to the cost of carin...
Western Eurasia witnessed several large-scale human migrations during the Holocene1–5. Here, to investigate the cross-continental effects of these migrations, we shotgun-sequenced 317 genomes—mainly from the Mesolithic and Neolithic periods—from acros