In the fall, birds ......... south into warmer temperatures because of the oncoming wintry months and very cold temperatures.

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In the fall, birds ......... south into warmer temperatures because of the oncoming wintry months and very cold temperatures. (*) mitigate (*) migrate (*) motivate (*) fly

This is a companion discussion topic for the original entry at https://english.best/questions/2287,in-the-fall-birds-___-south-into-warmer-temperatures-because-of-the-oncoming-wintry-months-and-very-cold-temperatures/