Alex Hyde / Dwarf snowbell (Soldanella pusilla) flower in snow. The plant generates heat by fermenting sugars to melt the surrounding snow. Austrian Alps, 2300 metres above sea level, June.
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Doug Wechsler / Vinegar flies / Fruit flies (Drosophila sp.) feeding on fermented sap or alcohol flux, Fort Washington State Park, Montgomery County, Pennsylvania, USA, June.
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Alex Hyde / Dwarf snowbell (Soldanella pusilla) flower in snow. The plant generates heat by fermenting sugars to melt the surrounding snow. Austrian Alps, 2300 metres above sea level, June.
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Nick Upton / Biogas plant with fermenting chambers for methane production from maize silage and silage heap in foreground. Cornau, near Vechta, Lower Saxony, Germany.
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Nick Upton / Biogas plant with maize silage being carried by tractor from silage heap to fermenting chambers for methane production. Cornau, near Vechta, Lower Saxony, Germany.
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Nick Upton / Biogas plant with fermenting chamber for methane production from maize silage, with silage hopper in foreground. Cornau, near Vechta, Lower Saxony, Germany.
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PREMAPHOTOS / Close up of Zebra mosaic butterfly (Colobura dirce) with its proboscis uncoiled as it feeds on fermenting sap, in rainforest, Argentina.
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Nick Gordon / Spider monkey (Ateles paniscus paniscus) eating fermenting Sapotaceae fruits, Amazonia, Brazil
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Nick Gordon / Black spider monkey (Ateles paniscus paniscus) eating fermenting fruit of Sapotaceae, Amazonia, Brazil
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Doug Allan / Inuk man placing stones on top of sealskin bag filled with Little auks (Alle alle) during preparation of kiviak, Siorapaluk, Greenland.
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Doug Allan / Inuk man placing stones on top of sealskin bag filled with Little auks (Alle alle) during preparation of kiviak, Siorapaluk, Greenland.
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Doug Allan / Inuk man stuffs dead Little auks (Alle alle) into seal skin bag to prepare kiviak delicacy, Siorapaluk, Greenland, August.
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Nigel Cattlin / Traditional method for storing and fermenting tea in an underground pit, Chang Mai, Thailand.
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Nigel Cattlin / Young tea leaves, the picked stage of the crop, in the estates of the CDameron Highlands, Malaysia, February
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Nigel Cattlin / Young tea leaves, the picked stage of the crop, in the estates of the CDameron Highlands, Malaysia, February
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Nigel Cattlin / Drying and fermenting cocoa (Theobroma cacao) beans in various stages in tiered containers, Mindanao, Philippines