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  2. Energy flow (ecology) - Wikipedia

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

    A food pyramid and a corresponding food web, demonstrating some of the simpler patterns in a food web A graphic representation of energy transfer between trophic layers in an ecosystem Energy flow is the flow of energy through living things within an ecosystem . [ 1 ]

  3. Food system - Wikipedia

    en.wikipedia.org/wiki/Food_system

    The term food system describes the interconnected systems and processes that influence nutrition, food, health, community development, and agriculture.A food system includes all processes and infrastructure involved in feeding a population: growing, harvesting, processing, packaging, transporting, marketing, consumption, distribution, and disposal of food and food-related items.

  4. Process flow diagram - Wikipedia

    en.wikipedia.org/wiki/Process_flow_diagram

    A process flow diagram (PFD) is a diagram commonly used in chemical and process engineering to indicate the general flow of plant processes and equipment. The PFD displays the relationship between major equipment of a plant facility and does not show minor details such as piping details and designations.

  5. Nutrient cycle - Wikipedia

    en.wikipedia.org/wiki/Nutrient_cycle

    A simplified food web illustrating a three-trophic food chain (producers-herbivores-carnivores) linked to decomposers. The movement of mineral nutrients through the food chain, into the mineral nutrient pool, and back into the trophic system illustrates ecological recycling. The movement of energy, in contrast, is unidirectional and noncyclic.

  6. Food web - Wikipedia

    en.wikipedia.org/wiki/Food_web

    Food cycle is an obsolete term that is synonymous with food web. Ecologists can broadly group all life forms into one of two trophic layers, the autotrophs and the heterotrophs . Autotrophs produce more biomass energy, either chemically without the sun's energy or by capturing the sun's energy in photosynthesis , than they use during metabolic ...

  7. Agrifood systems - Wikipedia

    en.wikipedia.org/wiki/Agrifood_systems

    Agrifood systems emissions in 2021. To feed a world population forecast to reach 9.7 billion in 2050, [18] FAO estimates that agriculture may need to produce 40–54 percent more food, feed and biofuel feedstock than in 2012, depending on the scenario. [19]

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