下面关于生物群落结构的叙述正确的是 A农田生态系统中的农作物长势相当群落没有垂直结构b动物在群落中的垂直分布与植物的分层有直接的 Template




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tomski下面关于生物群落结构的叙述正确的是 a农田生态系统中的农作物长势相当群落没有垂直结构b动物在群落中的垂直分布与植物的分层有直接的 coloring