正在加载图片...
I Minerals released by dust, nutrients Scavenger Water lost by collation to deeper layer trients and co Lost from Gained Solar energy Precipitation E Minerals(leaching, run off PRIMARY PRODUCERS DECOMPOSERS Soil bacteria Cycled within ecosystem ST LEVEL CONSUMERS 2ND LEVEL CONSUMERS ion, fish eagle)
<<向上翻页向下翻页>>
©2008-现在 cucdc.com 高等教育资讯网 版权所有