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  2. Coupon - Wikipedia

    en.wikipedia.org/wiki/Coupon

    Organized coupon exchange clubs are commonly found in regions where coupons are distributed. Often coupons are available for purchase at some online sites, [26] but since most coupons are not allowed to be sold, the fee is considered to be for the time and effort put into cutting out the coupons. Some types of coupons may be sold.

  3. Fossil fuel power station - Wikipedia

    en.wikipedia.org/wiki/Fossil_fuel_power_station

    By-products of fossil fuel power plant operation must be considered in their design and operation. Flue gas from combustion of the fossil fuels contains carbon dioxide and water vapor, as well as pollutants such as nitrogen oxides (NO x), sulfur oxides (SO x), and, for coal-fired plants, mercury, traces of other metals, and fly ash. Usually all ...

  4. Wood fuel - Wikipedia

    en.wikipedia.org/wiki/Wood_fuel

    The largest producers are all in these income groups and have large populations with a high reliance on wood for energy: in 2021, India ranked first with 300 million m³ (15 percent of total production), followed by China with 156 million m3 and Brazil with 129 million m³ (8 percent and 7 percent of global production). [20]

  5. Fossil - Wikipedia

    en.wikipedia.org/wiki/Fossil

    Fossil wood is wood that is preserved in the fossil record. Wood is usually the part of a plant that is best preserved (and most easily found). Fossil wood may or may not be petrified. The fossil wood may be the only part of the plant that has been preserved; [101] therefore such wood may get a special kind of botanical name.

  6. Radiocarbon dating - Wikipedia

    en.wikipedia.org/wiki/Radiocarbon_dating

    This fossil fuel effect (also known as the Suess effect, after Hans Suess, who first reported it in 1955) would only amount to a reduction of 0.2% in 14 C activity if the additional carbon from fossil fuels were distributed throughout the carbon exchange reservoir, but because of the long delay in mixing with the deep ocean, the actual effect ...

  7. Angola - Wikipedia

    en.wikipedia.org/wiki/Angola

    As of 2021, the biggest import partners were the European Union, followed by China, Togo, the United States, and Brazil. [12] More than half of Angola's exports go to China, followed by a significantly smaller amount to India, the European Union, and the United Arab Emirates. [13] The Angolan economy grew 18% in 2005, 26% in 2006 and 17.6% in 2007.