Which statements describe the wave? Check all that apply.

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?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Acontrol during an experiment. might change remains constant does not exist does change