A scientific theory is an explanation of the natural world on the basis of facts which have been repeatedly confirmed by experiments and observations. <span>Scientific laws are rules that explain observations through either text or mathematic forms. These laws suggest cause and effect from observations and must be repeatable.
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Therefore this would be a fact-supported scientific theory as it is an explanation based upon repeatedly confirmed experiments and observations, unlike Scientific law, which would be mathematical.
Should be Australia I think
Sometimes people don't call it an island though so the next biggest island is Greenland