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    Stored organic waste — Stock Photo
    Stored organic waste
    Stored organic waste — Stock Photo
    Stored organic waste
    Light micrograph of brewer's yeast (Saccharomyces cerevisiae) yeast budding cells. Saccharomyces cerevisiae is able to ferment sugar, producing alcohol and carbon dioxide in the process. It has long been used in the brewing of beer, production of win — Stock Photo
    Light micrograph of brewer's yeast (Saccharomyces cerevisiae) yeast budding cells. Saccharomyces cerevisiae is able to ferment sugar, producing alcohol and carbon dioxide in the process. It has long been used in the brewing of beer, production of win
    Close-up of gas nozzle in fuel tank of a car — Stock Photo
    Close-up of gas nozzle in fuel tank of a car
    Engineer with digital tablet in greenhouse — Stock Photo
    Engineer with digital tablet in greenhouse
    Various plant stocks grown for biomass research — Stock Photo
    Various plant stocks grown for biomass research
    Stored organic waste — Stock Photo
    Stored organic waste
    Large open barn or storage unit — Stock Photo
    Large open barn or storage unit
    Stored organic waste — Stock Photo
    Stored organic waste
    Biofuels production in Brazil, Alternative Energy concept — Stock Photo
    Biofuels production in Brazil, Alternative Energy concept