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  2. Carrying capacity - Wikipedia

    en.wikipedia.org/wiki/Carrying_capacity

    Carrying capacity. The carrying capacity of an environment is the maximum population size of a biological species that can be sustained by that specific environment, given the food, habitat, water, and other resources available. The carrying capacity is defined as the environment 's maximal load, [clarification needed] which in population ...

  3. Population growth - Wikipedia

    en.wikipedia.org/wiki/Population_growth

    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 ...

  4. Ecological footprint - Wikipedia

    en.wikipedia.org/wiki/Ecological_footprint

    The ecological footprint measures human demand on natural capital, i.e. the quantity of nature it takes to support people and their economies. [1] [2] [3] It tracks human demand on nature through an ecological accounting system. The accounts contrast the biologically productive area people use to satisfy their consumption to the biologically ...

  5. Global hectare - Wikipedia

    en.wikipedia.org/wiki/Global_hectare

    The global hectare is a useful measure of biocapacity as it can convert things like human dietary requirements into common units, which can show how many people a certain region on earth can sustain, assuming current technologies and agricultural methods. It can be used as a way of determining the relative carrying capacity of the earth.

  6. Human geography - Wikipedia

    en.wikipedia.org/wiki/Human_geography

    Human geography or anthropogeography is the branch of geography which studies spatial relationships between human communities, cultures, economies, and their interactions with the environment, examples of which include urban sprawl and urban redevelopment. [1] It analyzes spatial interdependencies between social interactions and the environment ...

  7. I = PAT - Wikipedia

    en.wikipedia.org/wiki/I_=_PAT

    I = (PAT) is the mathematical notation of a formula put forward to describe the impact of human activity on the environment . The expression equates human impact on the environment to a function of three factors: population (P), affluence (A) and technology (T). It is similar in form to the Kaya identity which applies specifically to emissions ...

  8. Biocapacity - Wikipedia

    en.wikipedia.org/wiki/Biocapacity

    Global biocapacity' is a term sometimes used to describe the total capacity of an ecosystem to support various continuous activity and changes. When the ecological footprint of a population exceeds the biocapacity of the environment it lives in, this is called an 'biocapacity deficit'. Such a deficit comes from three sources: overusing one's ...

  9. AP Human Geography - Wikipedia

    en.wikipedia.org/wiki/AP_Human_Geography

    Russian Language and Culture. v. t. e. Advanced Placement ( AP) Human Geography (also known as AP Human Geo, AP Geography, APHG, AP HuGe, AP HuG, AP Human, or HGAP) is an Advanced Placement social studies course in human geography for high school, usually freshmen students in the US, culminating in an exam administered by the College Board. [1 ...