|MLA Citation:||Bloomfield, Louis A. "Question 651"|
How Everything Works 20 Jul 2018. 20 Jul 2018 <http://howeverythingworks.org/print1.php?QNum=651>.
I can't think of any mechanism whereby these reversals would seriously affect climate or weather. However, these reversals would affect some migratory animals that use the earth's magnetic field to navigate. In principle, these animals might migrate the wrong direction and die out. However, there are always a few of each species that are born with their magnetic compasses reversed. While these backward animals might not survive during normal times, they would prosper during a reversal and would help to perpetuate their species. Moreover, experiments have shown that individual animals can adapt to the magnetic reversals as well.