Oyster mushroom is regarded as one of the commercially important edible mushrooms throughout the world. It consists of a number of different species including Pleurotus ostreatus, Pleurotus sajor-caju, […] The oyster mushroom is the second most important mushroom in production around the world, accounting for 25% of total world production of cultivated mushrooms.

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Another factor that makes it difficult to forecast our future happiness is that most of us are rationalizers.