What are the three definitions of health


  • Réponse publiée par: kurtiee

    Today, three types of definition of health seem to be possible and are used. The first is that health is the absence of any disease or impairment. The second is that health is a state that allows the individual to adequately cope with all demands of daily life (implying also the absence of disease and impairment). The third definition states that health is a state of balance, an equilibrium that an individual has established within himself and between himself and his social and physical environment.


  • Réponse publiée par: pataojester10


    1a : an analytic or interpretative literary composition usually dealing with its subject from a limited or personal point of view. b : something resembling such a composition a photographic essay. 2a : effort, attempt especially : an initial tentative effort. b : the result or product of an attempt.

  • Réponse publiée par: maledabacuetes


    secr8t baka imyday mo hehe

  • Réponse publiée par: nelgelinagudo

    For the academic journal from the Geological Society of America, see Lithosphere (journal).

    The tectonic plates of the lithosphere on Earth

    Earth cutaway from center to surface, the lithosphere comprising the crust and lithospheric mantle (detail not to scale)

    A lithosphere (Ancient Greek: λίθος [lithos] for "rocky", and σφαίρα [sphaira] for "sphere") is the rigid,[1] outermost shell of a terrestrial-type planet, or natural satellite, that is defined by its rigid mechanical properties. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of thousands of years or greater. The outermost shell of a rocky planet, the crust, is defined on the basis of its chemistry and mineralogy.


    1Earth's lithosphere

    1.1History of the concept


    1.2.1Oceanic lithosphere

    1.2.2Subducted lithosphere

    2Mantle xenoliths

    3See also


    5Further reading

    6External links

    Earth's lithosphere

    Earth's lithosphere includes the crust and the uppermost mantle, which constitutes the hard and rigid outer layer of the Earth. The lithosphere is subdivided into tectonic plates. The uppermost part of the lithosphere that chemically reacts to the atmosphere, hydrosphere, and biosphere through the soil-forming process is called the pedosphere. The lithosphere is underlain by the asthenosphere which is the weaker, hotter, and deeper part of the upper mantle. The Lithosphere-Asthenosphere boundary is defined by a difference in response to stress: the lithosphere remains rigid for very long periods of geologic time in which it deforms elastically and through brittle failure, while the asthenosphere deforms viscously and accommodates strain through plastic deformation.

    History of the concept

    The concept of the lithosphere as Earth's strong outer layer was described by A.E.H. Love in his 1911 monograph "Some problems of Geodynamics" and further developed by Joseph Barrell, who wrote a series of papers about the concept and introduced the term "lithosphere".[2][3][4][5] The concept was based on the presence of significant gravity anomalies over continental crust, from which he inferred that there must exist a strong, solid upper layer (which he called the lithosphere) above a weaker layer which could flow (which he called the asthenosphere). These ideas were expanded by Reginald Aldworth Daly in 1940 with his seminal work "Strength and Structure of the Earth."[6] They have been broadly accepted by geologists and geophysicists. These concepts of a strong lithosphere resting on a weak asthenosphere are essential to the theory of plate tectonics.


    Different types of lithosphere

    There are two types of lithosphere:

    Oceanic lithosphere, which is associated with oceanic crust and exists in the ocean basins (mean density of about 2.9 grams per cubic centimeter)

    Continental lithosphere, which is associated with continental crust (mean density of about 2.7 grams per cubic centimeter)

    The thickness of the lithosphere is considered to be the depth to the isotherm associated with the transition between brittle and viscous behavior.[7] The temperature at which olivine begins to deform viscously (~1000 °C) is often used to set this isotherm because olivine is generally the weakest mineral in the upper mantle. Oceanic lithosphere is typically about 50–140 km thick [8](but beneath the mid-ocean ridges is no thicker than the crust), while continental lithosphere has a range in thickness from about 40 km to perhaps 280 km;[8] the upper ~30 to ~50 km of typical continental lithosphere is crust. The mantle part of the lithosphere consists largely of peridotite. The crust is distinguished from the upper mantle by the change in chemical composition that takes place at the Moho discontinuity.

    Oceanic lithosphere

    Oceanic lithosphere consists mainly of mafic crust and ultramafic mantle (peridotite) and is denser than continental lithosphere, for which the mantle is associated with crust made of felsic rocks. Oceanic lithosphere thickens as it ages and moves away from the mid-ocean ridge. This thickening occurs by conductive cooling, which converts hot asthenosphere into lithospheric mantle and causes the oceanic lithosphere to become increasingly thick and dense with age. In fact, oceanic lithosphere is a thermal boundary layer for the convection[9] in the mantle. The thickness of the mantle part of the oceanic lithosphere can be approximated as a thermal boundary layer that thickens as the square root of time.

  • Réponse publiée par: nelspas422

    In geography, globalization is defined as the set of processes (economic, social, cultural, technological, institutional) that contribute to the relationship between societies and individuals around the world. It is a progressive process by which exchanges and flows between different parts of the world are intensified.

  • Réponse publiée par: aimeedelacruz24

    —a permanent population

    —a defined territory

    —a government

    —the capacity to enter into relations with other states.

  • Réponse publiée par: nelspas422
    the word use to describe a growing interdependence of the world's economies, cultures etc.The speed up of movement and exchangesprocess of interaction and integration among people, companies, and governments worldwide
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What are the three definitions of health...