Neonatal jaundice results when a newborn baby's liver is not working fully to remove a particular waste product. treatment involves placing the infant under a blue light, which reacts with the waste product and converts it to a form that the kidney can excrete. what is this waste product called?

The answer would be bilirubin

Bilirubin is a waste product that was produced from the breakdown of heme, protein part of the hemoglobin. This waste normally will be secreted in the feces after conjugated by the liver, which gives the yellowish color in it. Bilirubin could be broken by blue light so it is used to help newborn with high bilirubin.

The troposphere gets warmer as altitude increases.