下面关于生态系统的叙述中哪项是不正确的a.碳氮等化学元素从无机环境进入生物群落都必须通过绿色植物的光合作用b.生态系统的成分与营养结构 Template




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tomski下面关于生态系统的叙述中哪项是不正确的a.碳氮等化学元素从无机环境进入生物群落都必须通过绿色植物的光合作用b.生态系统的成分与营养结构 coloring