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The term "sampling error" has also been used in a related but fundamentally different sense in the field of genetics; for example in the bottleneck effect or founder effect, when natural disasters or migrations dramatically reduce the size of a population, resulting in a smaller population that may or may not fairly represent the original one.
Congressional district. Congressional districts, also known as electoral districts in other nations, are divisions of a larger administrative region that represent the population of a region in the larger congressional body. Countries with congressional districts include the United States, the Philippines, and Japan .
The apparent size of the Moon is roughly the same as that of the Sun, with both being viewed at close to one-half a degree wide. The Sun is much larger than the Moon but it is the vastly greater distance that gives it the same apparent size as the much closer and much smaller Moon from the perspective of Earth.
Population change is simply the change in the number of people in a specified area during a specific time period. Demographics (or demography) is the study of population statistics, their variation and its causes. These statistics include birth rates, death rates (and hence life expectancy), migration rates and sex ratios.
Demographic transition. In demography, demographic transition is a phenomenon and theory which refers to the historical shift from high birth rates and high death rates in societies with minimal technology, education (especially of women) and economic development, to low birth rates and low death rates in societies with advanced technology ...
Village (United States) A Shaker village's main street in Massachusetts. In the United States, the meaning of village varies by geographic area and legal jurisdiction. In formal usage, a " village " is a type of administrative division at the local government level. Since the Tenth Amendment to the United States Constitution prohibits the ...
State of Palestine. Territory claimed by Palestine (green). [2] Claimed territory annexed by Israel (light green). Palestine ( Arabic: فلسطين, romanized : Filasṭīn [e] ), officially the State of Palestine ( دولة فلسطين, Dawlat Filasṭīn ), [f] is a country in the Levant region of West Asia. It is officially recognized as a ...
Recruitment in behavioral ecology. In behavioral ecology and studies of animal communication, recruitment is the process by which individuals in a social group direct other individuals to do certain tasks. [2] This is often achieved through the use of recruitment pheromones that direct anywhere from one to several hundred individuals to ...