PL HEL Though some indications of frozen water have been found on Mars, and it can reach habitable temperatures in some places, no evidence of life has ever been found. Which of the following is most likely the reason Mars does NOT support life?
A. The composition of the atmosphere is not suitable for life.
B. The gravity on Mars is not strong enough to support life.
C. There is not enough sunlight to allow plants to grow.
D. The soil on Mars contains too many acidic salts.

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.

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.