an electrically charged particle is your answer :)
Cuando el hielo se calienta, comienza a derretirse y a formar agua, esto es progresivo
Enzymes speed up the chemicaal reaction .
Answer: The correct answer is the following book:
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→ the "<em>Saunders Pharmaceutical Drug Book</em> " .
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Hope this is helpful to you!
Wishing you the best!
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