The main variables in a science experiment ... because to make it a fair test, only 1 variable can be changed, which in this case is the current. The magnetic field is caused by the current ...
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Weakening magnetic field 590 million years ago could have sparked life’s big leapRecent research brings a surprising twist to our understanding of planetary science. This new study ... secondary effects of a weaker magnetic field. For example, increased levels of nitrogen ...
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