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  2. 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 ...

  3. 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.

  4. Recycling in the United States - Wikipedia

    en.wikipedia.org/wiki/Recycling_in_the_United_States

    Recycling materials waiting to be barged away on the Chicago River Trash and recycle bin at George Bush Intercontinental Airport. Recycling statistics (ca. 2014) [16] with similar numbers as of 2015 [17] An average of approximately 258 million tons of trash is generated by the United States in 2014 34.6% was recycled; 12.8% was combusted for ...

  5. 9 Fun Science Activities for Preschoolers

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  6. Closed-loop recycling - Wikipedia

    en.wikipedia.org/wiki/Closed-loop_recycling

    By reducing the production and use of raw materials, closed-loop recycling minimizes harm to the environment and discourages resource depletion. [5] In contrast, open-loop recycling is the process by which a product is recycled but has to be mixed with raw materials to become a new product, typically leading to downcycling. [1]

  7. Recycling by material - Wikipedia

    en.wikipedia.org/wiki/Recycling_by_material

    Recycling can be carried out on various raw materials. Recycling is an important part of creating more sustainable economies , reducing the cost and environmental impact of raw materials. Not all materials are easily recycled, and processing recyclable into the correct waste stream requires considerable energy.

  8. Waste minimisation - Wikipedia

    en.wikipedia.org/wiki/Waste_minimisation

    Waste hierarchy. Refusing, reducing, reusing, recycling and composting allow to reduce waste. Waste minimisation is a set of processes and practices intended to reduce the amount of waste produced. By reducing or eliminating the generation of harmful and persistent wastes, waste minimisation supports efforts to promote a more sustainable ...

  9. Zero waste - Wikipedia

    en.wikipedia.org/wiki/Zero_waste

    Recycling has been separated from the concept of zero waste. One example of this is the computer industry where worldwide millions of PC's are disposed of as electronic waste each year in 2016 44.7 million metric tons [ 24 ] of electronic waste was generated of which only 20% was documented and recycled.

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