The algae is an autotrophs. The fungi is an hetertrophs. The algae prepares starch which is used by fungi in lichens . The lichen body is made up of two components namely algae and fungi.The fungi could not prepare food but it invades other organism for its survival. This mechanism is peculier, it is really wonder of nature.
eventually pigeons occured in groups sometimes in pairs it pecks the grains by its conical beaks and do not chew it grinds in such a way that corps milk when it intends to feed its young ones the young ones in nests sounds when hungry pigeons feels its signal and the pre digested milk namely corps milk it feeds its young ones while we look at this bird this bird is a passionate calm and never qurrel among other fellow birds
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