Question

what is compression .... answer for objective
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Answer 1

Answer:

the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition.

Answer 2

Answer:

Compression is the method computers use to make files smaller by reducing the number of bits (1's and 0's) used to store the information.

Explanation:

All the files are stored in bits i.e, giga byte, mega byte and kilo byte. Files can be compressed i.e, a image file of 5mb can be compressed to 2mb but it will loss it quality. And files cannot be restored back to original state once compressed.