Mohammed, F.H.S. and Tawoos Mohammed Kamel Ahmed 2025. Study of The Physical and Chemical Properties of The Waters of The Tigris and Lower Zab Rivers and Their Pollution With Heavy Elements . Central Asian Journal of Medical and Natural Science. 6, 3 (Jun. 2025), 1274-1282. DOI:https://doi.org/10.17605/cajmns.v6i3.2834.