如图所示是某校研究性学习小组模拟池塘生态系统制作的一个封闭生态瓶请据图回答1该生态瓶能够保持稳定的主要原因有� .� .2该 Template




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tomski如图所示是某校研究性学习小组模拟池塘生态系统制作的一个封闭生态瓶请据图回答1该生态瓶能够保持稳定的主要原因有� .� .2该 coloring