It's a good question with a simple answer: there are no .CDA files on a CD. In fact, from a Windows perspective, there are no files at all. A music CD differs greatly from your hard drive or floppy disk drive in the way information is stored.Hard drives and floppy disks store data in concentric rings called tracks.t's a good question with a simple answer: there are no .CDA files on a CD. In fact, from a Windows perspective, there are no files at all. A music CD differs greatly from your hard drive or floppy disk drive in the way information is stored.
Listerâs early life. Joseph Lister was born in Upton, Essex, England, on April 5, 1827. He was the second of three children born to Joseph Jackson Lister, a very successful wine merchant and amateur scientist.
John Snow was an English physician and a leader in the adoption of anaesthesia and medical hygiene. He is considered one of the fathers of modern epidemiology, in part because of his work in tracing the source of a cholera outbreak in Soho, London, in 1854. His findings inspired fundamental changes in the water and waste systems of London, which led to similar changes in other cities, and a significant improvement in general public health around the world.