Water changes density with changing temperature. at what temperature in celsius does water have its smallest density value?

Water has its maximum density at 4 degree C. If you cool or heat water from 4degree C, the density will decrease. Minimum density will be at 0 C if you are cooling it from 4 C. Minimum density will be at 100 C if you are heating it.

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !