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Yarda - a peaty bog.
Yeast - a unicellular Ascomycete that typically multiplies by a budding process, although some yeasts (e.g. Sacharomyces pombe) multiply by symmetrical division. Sacharomyces species are important mediators of the commercial fermentation of carbohydrates to alcohol.
Yield - measurable produce of economic value, related to a specified crop or animal, or to a defied area, and to a period of time.