In addition, we have revised the sentence pertaining to the α diversity results to better reflect that the differences in α diversity between rural and urban human populations did not reach statistical significance in all datasets (The most significant difference was observed in the Yatsunenko dataset, which contained the largest number of samples, but the direction of difference was shared by all other human datasets). – Similarly, the random forest models on each species don't tell us much, whereas a model which could accurately predict across species would be pretty convincing.
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