PPSC Past Paper Excise & Taxation Inspector Excise & Taxation Department 2018 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsThe blood vessels which return the blood to the heart are called?A. Veins B. Capillaries C. Arteries D. Valves Which of the following disease have been eradicated in Pakistan?The Salinity of sea water is determined by the amount of common salt (sodium chloride) in _________ of sea water.?
