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  2. World population - Wikipedia

    en.wikipedia.org/wiki/World_population

    Estimates of world population by their nature are an aspect of modernity, possible only since the Age of Discovery.Early estimates for the population of the world [10] date to the 17th century: William Petty, in 1682, estimated the world population at 320 million (current estimates ranging close to twice this number); by the late 18th century, estimates ranged close to one billion (consistent ...

  3. Population dynamics - Wikipedia

    en.wikipedia.org/wiki/Population_dynamics

    Population dynamics is the type of mathematics used to model and study the size and age composition of populations as dynamical systems.Population dynamics is a branch of mathematical biology, and uses mathematical techniques such as differential equations to model behaviour.

  4. Population growth - Wikipedia

    en.wikipedia.org/wiki/Population_growth

    Population growth rate (2023, Our World in Data) [1] Absolute increase in global human population per year [2]. Population growth is the increase in the number of people in a population or dispersed group.

  5. Human dynamics - Wikipedia

    en.wikipedia.org/wiki/Human_dynamics

    Human Dynamics as a branch of statistical physics: Its main goal is to understand human behavior using methods originally developed in statistical physics.

  6. Population decline - Wikipedia

    en.wikipedia.org/wiki/Population_decline

    Population decline, also known as depopulation, is a reduction in a human population size. Throughout history, Earth's total human population has continued to grow; however, current projections suggest that this long-term trend of steady population growth may be coming to an end.

  7. Human overpopulation - Wikipedia

    en.wikipedia.org/wiki/Human_overpopulation

    Human overpopulation (or human population overshoot) is the idea that human populations may become too large to be sustained by their environment or resources in the long term.

  8. Earth system interactions across mountain belts - Wikipedia

    en.wikipedia.org/wiki/Earth_system_interactions...

    Earth systems and examples of Earth system interactions across mountain belts. Earth system interactions across mountain belts are interactions between processes occurring in the different systems or "spheres" of the Earth, as these influence and respond to each other through time.

  9. Earth system science - Wikipedia

    en.wikipedia.org/wiki/Earth_system_science

    The Science Education Resource Center, Carleton College, offers the following description: "Earth System science embraces chemistry, physics, biology, mathematics and applied sciences in transcending disciplinary boundaries to treat the Earth as an integrated system.