Keeping in mind that a crayfish is saltier than the fresh water it occupies, and remembering the idea of osmosis, note that the
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<h2><u>EARTH'S MAGNETIC FIELD</u></h2>
The magnets point North when the Earth's magnetic field has?
<h2><u>ANSWER</u></h2>I think the best answer for this question is Magnetic Reversal or Geomagnetic Reversal.
In geomagnetism, the term "geomagnetic reversal" also known as 'flip', is the process by which the North pole becomes South pole and the South pole transforms into North pole.
<h2><u>THE MAGNETIC REVERSAL</u></h2>The reversals happen on rare occasions when iron molecules start moving towards the opposite direction as other iron molecules around them within the Earth's spinning outer core.