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水生生态系统食物链
释义
水生生态系统食物链
Encyclopedia
农学
食物链
释
food chain of aquatic ecosystem
水生生态系统食物链
在水生生态系统中,从植物、细菌和有机物开始,物质和能量通过摄食与被摄食在各营养级的水生生物间依次传递所形成的链状营养关系。当能量在食物链传递时,每经过一个营养级就有一部分能量会损失掉。因此,食物链不可能无限加长,水生生态系统食物链的营养级通常只有4~5级。
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exhibition held in libraries
exhibition held in science and technology museum
exhibition held in urban planning exhibition centers
exhibition held in zoos
exhibition housed in exhibition space
exhibition information anxiety
exhibition installation
exhibitionistic disorder
Exhibition Jointly Orgainzed by the Palace Museum in Peking and the Central Museum in Nanking
exhibition liability insurance
exhibition material
exhibition micro-environment design
Exhibition of Artistic Design Works, National Exhibition of Fine Arts
Exhibition of Chinese Contemporary Experimental Works of Ceramic Arts
Exhibition of Modern Photo Salon in 1986
exhibition outline
exhibition plan
exhibition procedure
exhibition production room
exhibition programs design
exhibition project evaluation
exhibition project management
exhibition proposal evaluation
exhibition public relations activities
exhibition route
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