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  2. Energy hierarchy - Wikipedia

    en.wikipedia.org/wiki/Energy_hierarchy

    The Energy Hierarchy is a classification of energy options, prioritised to assist progress towards a more sustainable energy system. It is a similar approach to the waste hierarchy for minimising resource depletion , and adopts a parallel sequence.

  3. Ecological pyramid - Wikipedia

    en.wikipedia.org/wiki/Ecological_pyramid

    When energy is transferred to higher trophic levels, on average only about 10% is used at each level to build biomass, becoming stored energy. The rest goes to metabolic processes such as growth, respiration, and reproduction. [2] Advantages of the pyramid of energy as a representation: It takes account of the rate of production over a period ...

  4. Food web - Wikipedia

    en.wikipedia.org/wiki/Food_web

    Energy flow diagram of a frog. The frog represents a node in an extended food web. The energy ingested is utilized for metabolic processes and transformed into biomass. The energy flow continues on its path if the frog is ingested by predators, parasites, or as a decaying carcass in soil. This energy flow diagram illustrates how energy is lost ...

  5. Living systems - Wikipedia

    en.wikipedia.org/wiki/Living_systems

    Below the level of living systems, he defines space and time, matter and energy, information and entropy, levels of organization, and physical and conceptual factors, and above living systems ecological, planetary and solar systems, galaxies, etc. [3] [4] [5] Miller's central thesis is that the multiple levels of living systems (cells, organs ...

  6. Energy quality - Wikipedia

    en.wikipedia.org/wiki/Energy_quality

    Energy quality is a measure of the ease with which a form of energy can be converted to useful work or to another form of energy: i.e. its content of thermodynamic free energy. A high quality form of energy has a high content of thermodynamic free energy, and therefore a high proportion of it can be converted to work; whereas with low quality ...

  7. File:Diagram of Trophic Layers & Energy Transfer in an ...

    en.wikipedia.org/wiki/File:Diagram_of_Trophic...

    English: This is a pyramid-shaped diagram, showing how energy is transferred between trophic layers in an ecosystem, as well as what happens to other energy that is not transferred to the next layer. It was created by me utilizing the digital drawing tool Clip Studio Paint.

  8. Energy flow (ecology) - Wikipedia

    en.wikipedia.org/wiki/Energy_flow_(ecology)

    While a portion of the energy is used for respiration, another portion of the energy goes towards biomass in the consumer. [16] There are two major food chains: The primary food chain is the energy coming from autotrophs and passed on to the consumers; and the second major food chain is when carnivores eat the herbivores or decomposers that ...

  9. Conservation of energy - Wikipedia

    en.wikipedia.org/wiki/Conservation_of_energy

    This is an accepted version of this page This is the latest accepted revision, reviewed on 6 February 2025. Law of physics and chemistry This article is about the law of conservation of energy in physics. For sustainable energy resources, see Energy conservation. Part of a series on Continuum mechanics J = − D d φ d x {\displaystyle J=-D{\frac {d\varphi }{dx}}} Fick's laws of diffusion Laws ...