Different parts of the world have different language diversity, which has been suggested to be a consequence of climate. When social groups live in areas with unpredictable climate they are more likely to develop a shared language with other communities to mitigate ecological risk.

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Different parts of the world have different language diversity, which has been suggested to be a consequence of climate. When social groups live in areas with unpredictable climate they are more likely to develop a shared language with other communities to mitigate ecological risk.