You are stranded in the desert. You will need to light a signal fire for the rescue group to find you. There is no wood to burn, but you have a bag of chemicals and matches. You look through it to find something that is combustible. What should you try to burn? A. You find a tank of helium (He). B. You find a tank of methane (CH4). C. You find a box of calcium chloride (CaCl2). D. You find a bottle of iodine tablets (I2).

i believe it is 40–40–20%

explanation:

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

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.