某生态系统中甲乙丙丁四种生物所占的数量关系如图假设这四种生物构成一条食物链请据图回答1该生态系统中生产者是 一级消费者是 Template




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tomski某生态系统中甲乙丙丁四种生物所占的数量关系如图假设这四种生物构成一条食物链请据图回答1该生态系统中生产者是 一级消费者是 coloring