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question		réponse
2 korzyści twardej wody commencer à apprendre		2 benefits of hard water calcium ions are good for healthy bones and teeth, magnesium ions are good for reduce the risk of heart disease.
jak działa kolumna jonowymienna commencer à apprendre		how the ion exchange column works ions exchange column have a lot of sodium and hydrogen ions which they exchange for calcium and magnesium ions, removing them from water.
kamień commencer à apprendre		a scale
twardość commencer à apprendre		hardness
jak zniwelowac kwasne deszcze commencer à apprendre		how to neutralize acid rain use biofuels, use public transport, using filters in power station chimneys to remove sulfur dioxide from emissions

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