Why is it important o differentiate between human and animal blood from a crime scene? A) To determine whether an animal might have been injured. B) In order to accurately identify the source of any blood. In order to thoroughly and accurately recreate the crime scene. D To determine the possible source of any trace evidence such as hair or bite marks

B) In order to accurately identify the source of any blood. In order to thoroughly and accurately recreate the crime scene.

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.