PPSC Past Paper Assistant Director (Labour and Human Resource ) 2019 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsPlants during night exhale? Posted on April 15, 2021 by Rana TahirA. Oxygen B. Carbon Dioxide C. Nitrogen D. HydrogenShare 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)
