PPSC Past Paper Assistant Director Local Govt. & Community Development 2018 Solved MCQs, Everyday Science MCQs, PPSC Past Paper Junior Clerk S & GD 2018 solved MCQs, PPSC Solved Past Papers MCQsBlood cells are produced by in the human body?A. liver B. heart C. Bone marrow D. spleen the lens in the human eye is?The largest archipelago in the world?
