Very roughly, about ten years. Longer if it's in a cool, dry, dark place; shorter if it's in your car out in the sun. Better back it up now.
No, not decomposed in nature. Clean burning though in waste ovens.
Last century when desktop computers were invented they stored information on floppy disks. The last of the floppy disk to be used could take 1.44Megabyte. These days we have USB drives which will take 8Gigabyte or about 7 000 times a high density diskette
rubber never decomposes
it takes sevaral thousandes of yearsor more
Die,then get decomposed.
You can use the delete command appropriate to the filesystem of the diskette. You can fully format the diskette using the format utility provided. If you're concerned about sensitivity of the data, you should destroy the diskette using fire or some similar means. It's extremely difficult to "delete" data from a diskette in a way that is definitely unrecoverable.
"How many years does it take to become a chemotherapist?"
How many years does it take to become a cytopathologist?
Worms eat cats that are decomposed and they take small bites of it.
Most of the polythenes are not in the food cycle of microorganisms which decompose materials. generally it takes 2 to 5 years for a single piece of polythene to start getting decomposed, can take upto a decade for complete decomposition!
10 Years
about 67 years