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List Of Countries By Sex Ratio
The human sex ratio is the comparative number of males with respect to each female in a population. This is a list of sex ratios by country or region. Methodology The table's data is from ''The World Factbook'' unless noted otherwise. It shows the male to female sex ratio by the Central Intelligence Agency of the United States. If there is a discrepancy between ''The World Factbook'' and a country's census data, the latter may be used instead. A ratio above 1, for example 1.1, means there are more males than females (1.1 males for every female). A ratio below 1, for example 0.8, means there are more females than males (0.8 males for every female). A ratio of 1 means there are equal numbers of males and females. Countries See also * List of Chinese administrative divisions by sex ratio * List of states and union territories of India by sex ratio * Missing women References {{DEFAULTSORT:Countries by sex ratio Demographic lists Lists of countries, Sex ratio Hum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sex Ratio Total Population Per Country 2020
Sex is the phenotypic trait, trait that determines whether a sexual reproduction, sexually reproducing animal or plant produces male or female gametes. Male plants and animals produce smaller mobile gametes (spermatozoa, sperm, pollen), while females produce larger ones (ovum, ova, often called egg cells). Organisms that produce both types of gametes are called hermaphrodites. During sexual reproduction, male and female gametes fuse to form zygotes, which develop into offspring that inherit traits from each parent. Males and females of a species may have physical similarities (sexual monomorphism) or differences (sexual dimorphism) that reflect various reproductive pressures on the respective sexes. Mate choice and sexual selection can accelerate the evolution of physical differences between the sexes. The terms ''male'' and ''female'' typically do not apply in sexually undifferentiated species in which the individuals are Glossary of botanical terms#isomorphic, isomorphic ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sex Ratio Total Population Per Country 2020 (age 0-14)
Sex is the trait that determines whether a sexually reproducing animal or plant produces male or female gametes. Male plants and animals produce smaller mobile gametes (spermatozoa, sperm, pollen), while females produce larger ones ( ova, often called egg cells). Organisms that produce both types of gametes are called hermaphrodites. During sexual reproduction, male and female gametes fuse to form zygotes, which develop into offspring that inherit traits from each parent. Males and females of a species may have physical similarities (sexual monomorphism) or differences (sexual dimorphism) that reflect various reproductive pressures on the respective sexes. Mate choice and sexual selection can accelerate the evolution of physical differences between the sexes. The terms ''male'' and ''female'' typically do not apply in sexually undifferentiated species in which the individuals are isomorphic (look the same) and the gametes are isogamous (indistinguishable in size and shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sex Ratio Total Population Per Country 2020 (ages Over 65)
Sex is the trait that determines whether a sexually reproducing animal or plant produces male or female gametes. Male plants and animals produce smaller mobile gametes (spermatozoa, sperm, pollen), while females produce larger ones ( ova, often called egg cells). Organisms that produce both types of gametes are called hermaphrodites. During sexual reproduction, male and female gametes fuse to form zygotes, which develop into offspring that inherit traits from each parent. Males and females of a species may have physical similarities (sexual monomorphism) or differences (sexual dimorphism) that reflect various reproductive pressures on the respective sexes. Mate choice and sexual selection can accelerate the evolution of physical differences between the sexes. The terms ''male'' and ''female'' typically do not apply in sexually undifferentiated species in which the individuals are isomorphic (look the same) and the gametes are isogamous (indistinguishable in size and shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Sex Ratio
In anthropology and demography, the human sex ratio is the ratio of males to females in a population. Like most sexual species, the sex ratio in humans is close to 1:1. In humans, the natural ratio at birth between males and females is slightly biased towards the male sex: it is estimated to be about 1.05 or 1.06 or within a narrow range from 1.03 to 1.06 males per female. More data are available for humans than for any other species, and the human sex ratio is more studied than that of any other species, but interpreting these statistics can be difficult. The sex ratio of the total population is affected by various factors including natural factors, exposure to pesticides and environmental contaminants, war casualties, effects of war on men, sex-selective abortions, infanticides, aging, gendercide and problems with birth registration. The sex ratio for the entire world population is approximately 101 males to 100 females (2021 est.). Human sex ratios, either at birth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The World Factbook
''The World Factbook'', also known as the ''CIA World Factbook'', is a reference resource produced by the Central Intelligence Agency (CIA) with almanac-style information about the countries of the world. The official print version is available from the Government Publishing Office. The ''Factbook'' is available in the form of a website that is partially updated every week. It is also available for download for use off-line. It provides a two- to three-page summary of the demographics, geography, communications, government, economy, and military of each of 267 international entities including U.S.-recognized countries, dependencies, and other areas in the world. ''The World Factbook'' is prepared by the CIA for the use of U.S. government officials, and its style, format, coverage, and content are primarily designed to meet their requirements. However, it is frequently used as a resource for academic research papers and news articles. As a work of the U.S. government, it is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Intelligence Agency
The Central Intelligence Agency (CIA ), known informally as the Agency and historically as the Company, is a civilian foreign intelligence service of the federal government of the United States, officially tasked with gathering, processing, and analyzing national security information from around the world, primarily through the use of human intelligence (HUMINT) and performing covert actions. As a principal member of the United States Intelligence Community (IC), the CIA reports to the Director of National Intelligence and is primarily focused on providing intelligence for the President and Cabinet of the United States. President Harry S. Truman had created the Central Intelligence Group under the direction of a Director of Central Intelligence by presidential directive on January 22, 1946, and this group was transformed into the Central Intelligence Agency by implementation of the National Security Act of 1947. Unlike the Federal Bureau of Investigation (FBI), which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Population
In demographics, the world population is the total number of humans currently living. It was estimated by the United Nations to have exceeded 8 billion in November 2022. It took over 200,000 years of human prehistory and history for the human population to reach one billion and only 219 years more to reach 8 billion. The human population experienced continuous growth following the Great Famine of 1315–1317 and the end of the Black Death in 1350, when it was nearly 370,000,000. The highest global population growth rates, with increases of over 1.8% per year, occurred between 1955 and 1975, peaking at 2.1% between 1965 and 1970. The growth rate declined to 1.1% between 2015 and 2020 and is projected to decline further in the 21st century. The global population is still increasing, but there is significant uncertainty about its long-term trajectory due to changing fertility and mortality rates. The UN Department of Economics and Social Affairs projects between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Chinese Administrative Divisions By Sex Ratio
The sex ratio of the different administrative divisions of China has been the subject of academic study because of a high imbalance in births since the 1990s and female infanticide further worsening the imbalanced sex ratios at birth. Gender ratio for ages 1–4 The figures are from the intercensus survey of 2005, which was carried out in November 2005 on a representative 1% of the total population. See also * Female infanticide in China * Abortion in China * Missing women of China * List of countries by sex ratio References {{Family planning policies of China Gender Gender is the range of characteristics pertaining to femininity and masculinity and differentiating between them. Depending on the context, this may include sex-based social structures (i.e. gender roles) and gender identity. Most culture ... * Gender in Asia Abortion in China Demographics of China China, sex ratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of States And Union Territories Of India By Sex Ratio
Sex ratio is used to describe the ratio of females to males in a population. In India, the sex ratio has been estimated via a number of methods and data sets including the decennial censuses, the National Family Health Surveys (NFHS), the Civil Registration System, the Sample Registration System and the Health Management Information System. In 2014, the ratio of female births per 1000 male births varied from 887 to 918 using these estimates. According to the NFHS-4 (2015–16) sex ratio of the total population (females per 1,000 males) was 991 (with an urban ratio of 956 and a rural ratio of 1,009). In 2011–2013, it was revealed through a population census with the Sample Registration System (SRS) that the sex ratio of India was 909 females per 1000 of males. It has skewed downwards from then, recording 900 females in 2013–2015 and 896 in 2015–17 per 1000 of males. Furthermore, that survey conducted with the SRS also showed Chhattisgarh as the highest sex ratio at 961, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missing Women
The term "missing women" indicates a shortfall in the number of women relative to the expected number of women in a region or country. It is most often measured through male-to-female sex ratios, and is theorized to be caused by sex-selective abortions, female infanticide, and inadequate healthcare and nutrition for female children. It is argued that technologies that enable prenatal sex selection, which have been commercially available since the 1970s, are a large impetus for missing female children. The phenomenon was first noted by the Indian Nobel Prize in Economics, Nobel Prize-winning economist Amartya Sen in an essay in ''The New York Review of Books'' in 1990, and expanded upon in his subsequent academic work. Sen originally estimated that more than a hundred million women were "missing" or "gone". Later researchers found differing numbers, with most recent estimates around 90–101 million women. These effects are concentrated in countries typically in Asia (with the larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demographic Lists
Demography () is the statistical study of populations, especially human beings. Demographic analysis examines and measures the dimensions and dynamics of populations; it can cover whole societies or groups defined by criteria such as education, nationality, religion, and ethnicity. Educational institutions usually treat demography as a field of sociology, though there are a number of independent demography departments. These methods have primarily been developed to study human populations, but are extended to a variety of areas where researchers want to know how populations of social actors can change across time through processes of birth, death, and migration. In the context of human biological populations, demographic analysis uses administrative records to develop an independent estimate of the population. Demographic analysis estimates are often considered a reliable standard for judging the accuracy of the census information gathered at any time. In the labor f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lists Of Countries
This is a list of lists of countries and territories by various criteria. A country or territory is a geographical area, either in the sense of ''nation'' (a cultural entity) or '' state'' (a political entity).The Oxford English Dictionary, Second Edition, with online updates as of September 2008. Entry "1. country" Demographics Population, gender and poverty * List of countries and dependencies by population * List of countries by population (United Nations) * List of countries and dependencies by population density * List of countries by past and future population density * List of countries by real population density * Lists of countries by population in: ** 1; 1000; 1500; 1600; 1700; 1800; 1900; 1907; 1939; 1989; 2000; 2005; 2010; 2015 * List of countries by past and projected future population * List of countries by population growth rate * List of countries by natural increase * List of countries by net migration rate * List of countries by sex ratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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