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Global fertility rates as of 2020. About half of the world population lives in nations with sub-replacement fertility. [226] The concept of human overpopulation, and its attribution as a cause of environmental issues, are controversial. [68] [36] [227] [70] [121]
Overpopulation or overabundance is a state in which the population of a species is larger than the carrying capacity of its environment.This may be caused by increased birth rates, lowered mortality rates, reduced predation or large scale migration, leading to an overabundant species and other animals in the ecosystem competing for food, space, and resources.
National Commission for the Observance of World Population Year 1974; Negative Population Growth; NumbersUSA; Population Action International; Population Balance; Population Connection (called Zero Population Growth until 2002) Population Council; Population Media Center; Population Reference Bureau; Worldwatch Institute
The current world population growth is approximately 1.09%. [5] People under 15 years of age made up over a quarter of the world population (25.18%), and people age 65 and over made up nearly ten percent (9.69%) in 2021. [5] The world's literacy rate has increased dramatically in the last 40 years, from 66.7% in 1979 to 86.3% today. [13]
The Han Chinese are the world's largest single ethnic group, constituting over 19% of the global population in 2011. [82] The world's most-spoken languages [a] are English (1.132B), Mandarin Chinese (1.117B), Hindi (615M), Spanish (534M) and French (280M). More than three billion people speak an Indo-European language, which is the largest ...
Pages in category "Human overpopulation" ... World population; Z. Zero population growth This page was last edited on 31 August 2024, at 08:59 (UTC) ...
Malthus overpopulation would lead to war, famine, and diseases and in the future, society won't be able to feed every person and eventually die. Malthus theory was incorrect, however, because by the early 1900s and mid 1900s, the rise of conventional foods brought a decline to food production and efficiency increased exponentially.
The CIA World Factbook gives the world annual birthrate, mortality rate, and growth rate as 1.86%, 0.78%, and 1.08% respectively. [29] The last 100 years have seen a massive fourfold increase in the population, due to medical advances , lower mortality rates, and an increase in agricultural productivity made possible by the Green Revolution .