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在能量金字塔中，構(gòu)成金字塔基層的是________，其上全部是________，而金字塔中不包括________，能量由基層傳遞到了一個營養(yǎng)級的效率大約為________，研究生態(tài)系統(tǒng)中能量流動的主要目的，就是設(shè)法調(diào)整生態(tài)系統(tǒng)的________關(guān)系，使能量________的部分。

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