Answer:
a. each particle of matter vibrates about its normal rest position and along the axis of propagation,
b. Liquids
C. because liquids have the right amount of space between them for the wave to pass through quickly
Explanation:
Audio formats such as mp3, ogg vorbis, and AAC have good sound quality even though they use Lossy compression.
This refers to the compression of data in which some parts of that information is lost in the process. After that, when you compress it again, that data returns to its normal state.
because firstly humans looked at space and then discovered stars