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NRANK, or National Rank, is a ranking of the rarity of a species within a nation. Each nation can assign their own NRANK, based on information from conservation data centres, natural heritage programmes and expert scientists. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「NRANK」の詳細全文を読む スポンサード リンク
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