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  2. Topsoil - Wikipedia

    en.wikipedia.org/wiki/Topsoil

    Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm). Together these make a substrate capable of holding water and air which encourages biological activity.

  3. Natural refrigerant - Wikipedia

    en.wikipedia.org/wiki/Natural_refrigerant

    Carbon dioxide sees extensive use in large-scale refrigeration systems, sometimes via a cascade refrigeration system. [16] It is also used sparingly in automotive refrigeration, [20] and is seen as favorable for uses in domestic, commercial and industrial refrigeration and air conditioning systems. [1]

  4. Refrigerant - Wikipedia

    en.wikipedia.org/wiki/Refrigerant

    Currently used in residential and commercial air-conditioners and heat pumps. R-134a HFC-134a CH 2 FCF 3: 1,1,1,2-Tetrafluoroethane: 3790 1550 Widely used Most used in 2020 for hydronic heat pumps in Europe and the United States in spite of high GWP. [58] Commonly used in automotive air conditioners prior to phase out which began in 2012. R-410A

  5. Chlorofluorocarbon - Wikipedia

    en.wikipedia.org/wiki/Chlorofluorocarbon

    One of these compounds, HFC-134a, were used in place of CFC-12 in automobile air conditioners. Hydrocarbon refrigerants (a propane/isobutane blend) were also used extensively in mobile air conditioning systems in Australia, the US and many other countries, as they had excellent thermodynamic properties and performed particularly well in high ...

  6. Buffer strip - Wikipedia

    en.wikipedia.org/wiki/Buffer_strip

    Contour buffer strips used to retain soil and reduce erosion. A buffer strip is an area of land maintained in permanent vegetation that helps to control air quality, soil quality, and water quality, along with other environmental problems, dealing primarily on land that is used in agriculture.

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Humus - Wikipedia

    en.wikipedia.org/wiki/Humus

    In agriculture, "humus" sometimes also is used to describe mature or natural compost extracted from a woodland or other spontaneous source for use as a soil conditioner. [3] It is also used to describe a topsoil horizon that contains organic matter ( humus type , [ 4 ] humus form , [ 5 ] or humus profile [ 6 ] ).

  9. Debris falls from roof at home of Cowboys before game against ...

    www.aol.com/debris-falls-roof-home-cowboys...

    A piece of the roof at the home of the Dallas Cowboys fell to the field while the retractable portion of it was being opened at least three hours before a 34-10 loss to Houston on Monday night ...