PPSC Past Paper Social Security Officer in PESSI – Labour and Human Resource Department 2018 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsOrnithology is a branch of science that concerns the study of?A. Plants B. Birds C. Amphibians D. Ants Select odd one out?Lockjaw is a medical condition which is observed in the case of?
