True or false louise pasteur discovered that bacteria actually cause diseases

List four observations that indicate that a chemical reaction may be taking place

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?

What is the temperature of one mole of helium gas at stp?