PPSC Past Paper Excise & Taxation Inspector Additional Directorate Excise, 2018 Solved MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsWhat are the main causes of tooth decay? Posted on May 24, 2021 by Rana TahirA. Fluoride B. Calcuim C. Weakness D. None of theseShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)