⊿ Point. {R} Glossary. ◢ Keyword: P. ◥ University. {q} PhD. {tr} Training. ⚫ UK. ↂ EndNote. ☝️ Weerakkody. Population. All the organisms of a given species that live in a specified region Population is the term typically used to refer to the number of people in a single area. Governments conduct a census to quantify the size of a resident population within a given jurisdiction. The term is also applied to animals, microorganisms, and plants, and has specific uses within such fields as ecology and genetics. Etymology[edit] The word population is derived from the Late Latin populationem (a people, a multitude), which is itself derived from the Latin word populus (a people).[1] Use of the term[edit] Social sciences[edit] Ecology[edit] In ecology, a population is a group of organisms of the same species who inhabit the same particular geographical area and are capable of interbreeding.[2][3] The area of a sexual population is the area where inter-breeding is possible between any pair within the area and more probable than cross-breeding with individuals from other areas.[4] Dynamics[edit] Genetics[edit]
☢️ World. World population. Total number of living humans on Earth In world demographics, the world population is the total number of humans currently alive. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human prehistory and history for the human population to reach a billion and only 218 more years to reach 8 billion. The total number of births globally is currently (2015–2020) 140 million/year, which is projected to peak during the period 2040–2045 at 141 million/year and then decline slowly to 126 million/year by 2100.[7] The total number of deaths is currently 57 million/year and is projected to grow steadily to 121 million/year by 2100.[8] The median age of human beings as of 2020[update] is 31 years.[9] History Estimates of world population by their nature are an aspect of modernity, possible only since the Age of Discovery.
Prehistoric patterns The history of the world's population involves a great deal of speculation. Modern history. Population Collapse is a Massive Problem - Dr Paul Morland.