N the 1990s, a California camper in a volcanic area died after he ignored posted warnings and slept in a campground among standing but dead trees. He was not scalded, he was not poisoned, and the campground did not smell bad. What volcanic gas killed the camper and the trees?

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.