Is distillation a purification or characterization technique

What filament and tubules give a cell its shape

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?