The songs of birds are part of a ritual to attract potential partners of their own species. The song presents specific patterns recognized only by members of the same species. What advantage does this present for the species of birds?

i believe that it is a exoplanet

your answer is c) plasma

~*"auba14"*~

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.