Health.Zone Web Search

Search results

  1. Results from the Health.Zone Content Network
  2. Non-renewable resource - Wikipedia

    en.wikipedia.org/wiki/Non-renewable_resource

    A non-renewable resource (also called a finite resource) is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption. [1] An example is carbon-based fossil fuels. The original organic matter, with the aid of heat and pressure, becomes a fuel such as oil or gas.

  3. Natural capital - Wikipedia

    en.wikipedia.org/wiki/Natural_capital

    Natural capital is the world's stock of natural resources, which includes geology, soils, air, water and all living organisms. Some natural capital assets provide people with free goods and services, often called ecosystem services. All of these underpin our economy and society, and thus make human life possible. [3][4]

  4. Natural resource - Wikipedia

    en.wikipedia.org/wiki/Natural_resource

    Natural-resource meaning [:] An actual or potential form of wealth supplied by nature, as coal, oil, water power, timber, arable land, etc. A material source of wealth, such as timber, fresh water, or a mineral deposit, that occurs in a natural state and has economic value. Something, such as a forest, a mineral deposit, or fresh water, that is ...

  5. Abiogenic petroleum origin - Wikipedia

    en.wikipedia.org/wiki/Abiogenic_petroleum_origin

    The abiogenic petroleum origin hypothesis proposes that most of earth's petroleum and natural gas deposits were formed inorganically, commonly known as abiotic oil. [ 1 ] Scientific evidence overwhelmingly supports a biogenic origin for most of the world's petroleum deposits. [ 2 ][ 3 ] Mainstream theories about the formation of hydrocarbons on ...

  6. Solar energy - Wikipedia

    en.wikipedia.org/wiki/Solar_energy

    Solar power, also known as solar electricity, is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV) or indirectly using concentrated solar power. Solar panels use the photovoltaic effect to convert light into an electric current. [63]

  7. Open system (systems theory) - Wikipedia

    en.wikipedia.org/wiki/Open_system_(systems_theory)

    In the social sciences an open system is a process that exchanges material, energy, people, capital and information with its environment. French/Greek philosopher Kostas Axelos argued that seeing the "world system" as inherently open (though unified) would solve many of the problems in the social sciences, including that of praxis (the relation of knowledge to practice), so that various social ...

  8. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, and hydropower. Bioenergy and geothermal power are also significant in some countries. Some also consider nuclear power a renewable power source ...

  9. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    UN Secretary-General Ban Ki-moon Definitions The United Nations Brundtland Commission described the concept of sustainable development, for which energy is a key component, in its 1987 report Our Common Future. It defined sustainable development as meeting "the needs of the present without compromising the ability of future generations to meet their own needs". This description of sustainable ...