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Human overpopulation. Human overpopulation (or human population overshoot) describes a concern that human populations may become too large to be sustained by their environment or resources in the long term. The topic is usually discussed in the context of world population, though it may concern individual nations, regions, and cities.
1-56849-587-0. The Population Bomb is a 1968 book co-authored by former Stanford University professor Paul R. Ehrlich and former Stanford senior researcher in conservation biology Anne H. Ehrlich. [1] [2] From the opening page, it predicted worldwide famines due to overpopulation, as well as other major societal upheavals, and advocated ...
Behavioral sink. " Behavioral sink " is a term invented by ethologist John B. Calhoun to describe a collapse in behavior that can result from overpopulation. The term and concept derive from a series of over-population experiments Calhoun conducted on Norway rats between 1958 and 1962. [1] In the experiments, Calhoun and his researchers created ...
Malthusianism is the theory that population growth is potentially exponential, according to the Malthusian growth model, while the growth of the food supply or other resources is linear, which eventually reduces living standards to the point of triggering a population decline. This event, called a Malthusian catastrophe (also known as a ...
Population growth is the increase in the number of people in a population or dispersed group. Actual global human population growth amounts to around 83 million annually, or 1.1% per year. [2] The global population has grown from 1 billion in 1800 to 7.9 billion in 2020. [3] The UN projected population to keep growing, and estimates have put ...
With Christianity the dominant faith in some urban centers, Christians accounted for approximately 10% of the Roman population by 300, according to some estimates. According to Rodney Stark , Christianity then rapidly grew in the 4th century with an average growth of 40% per decade (or 3.42% per year); by 350, Christians accounted for 56.5% of ...
According to 2 Kings 15:29, the population of Naphtali was deported to Assyria. 722 BCE In 722 BCE, Samaria, the capital city of the northern Kingdom of Israel, was taken by Sargon II, who resettled the Israelites in Halah, Habor, Gozan and in the cities of Media (2 Kings 18:11–12). Sargon recorded the capture of that city thus: "Samaria I ...
It is one of the largest known explosive eruptions in the Earth's history. The Toba catastrophe theory is that this event caused a severe global volcanic winter of six to ten years and contributed to a 1,000-year-long cooling episode, resulting in a genetic bottleneck in humans. [2] [3] However, some physical evidence disputes the association ...
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