What rung of the Cosmic Distance Ladder is most appropriate for the incorrect choice/s above?
Parallax
Main sequence fitting
Variable stars
Type 1a supernovae
Hubble's Law

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?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Which statement best describes the flow of energy in this scenario