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  2. Biogeochemical cycle - Wikipedia

    en.wikipedia.org/wiki/Biogeochemical_cycle

    Geologic processes, such as weathering, erosion, water drainage, and the subduction of the continental plates, all play a role in this recycling of materials. Because geology and chemistry have major roles in the study of this process, the recycling of inorganic matter between living organisms and their environment is called a biogeochemical cycle.

  3. Waste hierarchy - Wikipedia

    en.wikipedia.org/wiki/Waste_hierarchy

    The waste management hierarchy indicates an order of preference for action to reduce and manage waste, and is usually presented diagrammatically in the form of a pyramid. [3] The hierarchy captures the progression of a material or product through successive stages of waste management, and represents the latter part of the life-cycle for each ...

  4. Recycling codes - Wikipedia

    en.wikipedia.org/wiki/Recycling_codes

    Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.

  5. Waste valorization - Wikipedia

    en.wikipedia.org/wiki/Waste_valorization

    Waste valorization, beneficial reuse, beneficial use, value recovery or waste reclamation [1] is the process of waste products or residues from an economic process being valorized (given economic value), by reuse or recycling in order to create economically useful materials.

  6. Nutrient cycle - Wikipedia

    en.wikipedia.org/wiki/Nutrient_cycle

    The term ecological recycling appears in a 1968 publication on future applications of ecology for the creation of different modules designed for living in extreme environments, such as space or under the sea: "For our basic requirement of recycling vital resources, the oceans provide much more frequent ecological recycling than the land area ...

  7. Waste - Wikipedia

    en.wikipedia.org/wiki/Waste

    What constitutes waste depends on the eye of the beholder; one person's waste can be a resource for another person. [1] Though waste is a physical object, its generation is a physical and psychological process. [1] The definitions used by various agencies are as below.

  8. AOL Mail

    mail.aol.com/d?reason=invalid_cred

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  9. Concrete recycling - Wikipedia

    en.wikipedia.org/wiki/Concrete_recycling

    Concrete recycling is the use of rubble from demolished concrete structures. Recycling is cheaper and more ecological than trucking rubble to a landfill . [ 1 ] Crushed rubble can be used for road gravel, revetments , retaining walls, landscaping gravel, or raw material for new concrete.