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  2. Biofuel - Wikipedia

    en.wikipedia.org/wiki/Biofuel

    Biofuel is a fuel that is produced over a short time span from biomass, rather than by the very slow natural processes involved in the formation of fossil fuels such ...

  3. Issues relating to biofuels - Wikipedia

    en.wikipedia.org/wiki/Issues_relating_to_biofuels

    Food vs fuel is the debate regarding the risk of diverting farmland or crops for biofuels production in detriment of the food supply on a global scale. Essentially the debate refers to the possibility that by farmers increasing their production of these crops, often through government subsidy incentives, their time and land is shifted away from other types of non-biofuel crops driving up the ...

  4. Biomass (energy) - Wikipedia

    en.wikipedia.org/wiki/Biomass_(energy)

    Biomass (in the context of energy generation) is matter from recently living (but now dead) organisms which is used for bioenergy production. There are variations in how such biomass for energy is defined, e.g. only from plants, [8] or from plants and algae, [9] or from plants and animals. [10]

  5. Fossil fuel - Wikipedia

    en.wikipedia.org/wiki/Fossil_fuel

    A fossil fuel [a] is a carbon compound- or hydrocarbon-containing material [2] formed naturally in the Earth's crust from the buried remains of prehistoric organisms (animals, plants or planktons), a process that occurs within geological formations.

  6. Bioenergy - Wikipedia

    en.wikipedia.org/wiki/Bioenergy

    Biodiesel is produced from the oils in for instance rapeseed or sugar beets and is the most common biofuel in Europe. [citation needed] Second-generation biofuels (also called "advanced biofuels") utilize non-food-based biomass sources such as perennial energy crops and agricultural residues/waste.

  7. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [ 4 ] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users.

  8. Biofuel in the United States - Wikipedia

    en.wikipedia.org/wiki/Biofuel_in_the_United_States

    The Renewable Fuel Standard called for 7.5 billion US gallons (28 × 10 ^ 6 m 3) of biofuels to be used annually by 2012, expanding the market for biofuels. [ 11 ] The EPA announced that the 2009 Renewable Fuel Standard will require most refiners, importers, and non-oxygenate blenders of gasoline to displace 10.21% of their gasoline with ...

  9. Energy in the United States - Wikipedia

    en.wikipedia.org/wiki/Energy_in_the_United_States

    The United States' portion of the electrical grid in North America had a nameplate capacity of 1,280 GW [7] and produced 4,029 TWh [8] in 2023, using 34% of primary energy to do so. [9] The country is the second-largest producer and consumer of electricity, behind China. [4] Natural gas overtook coal as the dominant source for electric ...