求问:explain the affect of distribution of ecosystems.

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求问:explaintheaffectofdistributionofecosystems.求问:explaintheaffectofdistributionofecosystems.求问:expla

求问:explain the affect of distribution of ecosystems.
求问:explain the affect of distribution of ecosystems.

求问:explain the affect of distribution of ecosystems.
解释一下生态系统的分布所产生的影响

explain the affect of distribution of ecosystems.
解释的分布的影响生态系统。