Consider the semicolon in bold, which is used to connect two sentences. If it is not the best choice, replace it with a different punctuation mark.
;:,
Scientistshavefoundanexplanationforwhyrefrigeratorsoftenmakestrangeorcreepynoisesaspartsofthefridgechangetemperaturetheyexpandandcontractreleasinggroaningandcrackingsoundsref_doc_title.
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