Population, in human biology, the whole number of inhabitants occupying an area (such as a country or the world) and continually being modified by increases (births and immigrations) and losses (deaths and emigrations). As with any biological population, the size of a human population is limi...
It has created enormous cities, has greatly increased the urban population as compared with the rural, and has thus rescued a considerable part of the population from the idiocy of rural life. View in context Well, as I was saying, we got our mules and horses, after an hour and a half...
China is not only the country with the second largest population on earth, it is also one of the countries with the fastest aging population. This is mainly due to decades of falling birth rates on the one hand and steeply rising life expectancy on the other. As the aging of the ...
indicates a population increase, and a negative growth rate indicates a population decrease. The upper limit of a population in a givenenvironment, referred to as the environment’scarrying capacity, is determined by the amount and availability of resources that are life-sustaining for that ...
of the complex interactions of population, facilities, and road networks which serve as the foundation of urban life. Human activities are time-varying and location-specific. Facilities and infrastructure could influence the activities of humans and the outcomes of their activities, such as demand ...
life table entropy (sometimes lifespan equality), which can be calculated as ln(1/Keyfitz’s entropy) (Wrycza et al.2015, Colchero et al.2016). Another is the ratio of longevity (Ω)/life expectancy (e0), where Ω is the age at which, for example, 95% of the adults have died. ...
By 2050 Africa’s most populous nation could have nearly 400 million people squeezed into a country one-tenth the size of the United States
GWAS of lifetime cannabis use reveals new risk loci, genetic overlap with psychiatric traits, and a causal influence of schizophrenia. Nat Neurosci. 2018;21(9):1161-1170. doi:10.1038/s41593-018-0206-1 PubMedGoogle ScholarCrossref 34. Di Forti M, Quattrone D, Freeman TP...
The population explosion over the past two centuries is part of a phenomenon known as the demographic transition. Simply put, this transition results from a drastic reduction in mortality, which then leads to a reduction in fertility, and increase in life expectancy; this interim period where deat...
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