Water can't be compressed. Water, like anything else, can be compressed. The change in volume even at huge pressure is very small, but the extent of compressibility is not an element of this question
4.7 times the ambient air pressure which is ? Need more data...
compressed marble
Mercury when was formed was very hot & after sometime it suddenly compressed which formed wrinkles on it.
Because the intramolecular forces of solids and liquids already provide an amount of force compressing the atoms to a point that they are no longer as easily compressed.
No. the format of a file is the description about how the data in it are structured. Thus the data described by the format can be compressed but the format itself can not.
The basic principle (and a very simplified explanation) of data compression is to look for repetitions in data, and replace it by abbreviations. This means that not all data can be compressed - it is fairly easy to show (do some reading on the "counting argument") that no matter what compression method is used, there will always be some data that can't be compressed. On the other hand, some data can be compressed quite a lot. The maximum compression factor depends on what kind of data is saved. For example, typically a text file (like, one created with Word or Excel) will compress in a ratio of 2 or 3 (the compressed file will be smaller by a factor of 2-3 than the original data), while, to give another example, a JPEG (JPG) image can hardly be compressed at all - because it is already stored in compressed form. In theory, data compression can be programmed in almost any language. After all, all that is required is to read a file (other input is possible, though), do some manipulations (according to certain standards), and save it again.
an image file
Air is easy compressed, water with many difficulties at very high pressures.
Multiplexes are a bundle of TV services that has been compressed into a data stream. These are combined data in a single channel.
A compressed zip folder is data that has been shrunk from its original size to take less disk space.
Voip
For CSLISP, the TCP header is reduced from about 20 characters to about 7. The actual data is not compressed, so you don't save very much in transmission costs per packet.
bash
Yes, electricity is a very good means of transmitting data.
A zip drive stores compressed data. A DVD writer transfer data....
Yes, very easily.