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Prime vertical. In astronomy, astrology, and geodesy, the prime vertical or first vertical [1] is the vertical circle passing east and west through the zenith of a specific location, and intersecting the horizon in its east and west points. In other words, the prime vertical is the vertical circle perpendicular to the meridian, and passes ...
Population ageing. Population ageing is an increasing median age in a population because of declining fertility rates and rising life expectancy. Most countries have rising life expectancy and an ageing population, trends that emerged first in developed countries but are now seen in virtually all developing countries.
Genetic genealogy. Population genetics is a subfield of genetics that deals with genetic differences within and among populations, and is a part of evolutionary biology. Studies in this branch of biology examine such phenomena as adaptation, speciation, and population structure. [1]
Pathans in India are citizens or residents of the Indian Republic who are of ethnic Pashtun ancestry. "Pathan" is the local Hindi-Urdu term for an individual who belongs to the Pashtun ethnic group, or descends from it. [6] [7] The term additionally finds mention among Western sources, mainly in the colonial-era literature of British India.
WhatsApp (officially WhatsApp Messenger) is an instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. It allows users to send text, voice messages and video messages, make voice and video calls, and share images, documents, user locations, and other content.
Population density is the number of people per unit of area, usually transcribed as "per square kilometer" or square mile, and which may include or exclude, for example, areas of water or glaciers. Commonly this is calculated for a county, city, country, another territory or the entire world . The world's population is around 8,000,000,000 [3 ...
Convict leasing was a system of forced penal labor that was practiced historically in the Southern United States, the laborers being mainly African-American men; it was ended during the 20th century. It provided prisoner labor to private parties, such as plantation owners and corporations (e.g. Tennessee Coal and Iron Company and Chattahoochee ...
UTC+4:30 (Afghanistan Standard Time) Nadir Shah Kot District ( Pashto: نادر شاه کوټ ولسوالۍ, Persian: ولسوالی نادرشاه کوت) is situated in the western part of Khost Province, Afghanistan. It borders Paktia Province and Shamal District to the west, Qalandar District to the north, Musa Khel District to the ...