PPSC Past Paper Assistant Protocol Officer in Directorate General Protocol, S&GAD 2019 Solved MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsThe World Day to Combat Desertification and Drought us a United Nations is observed? Posted on May 10, 2021 by Rana TahirA. 17 June B. 17 July C. 17 Aug D. 17 MayShare 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)