Respuesta :
A wave is a transfer of energy, usually in a form of matter called a medium. ... There are also waves that don't travel through any medium at all, called electromagnetic waves.
Answer: Waves come in two kinds, longitudinal and transverse. Transverse waves are like those on water, with the surface going up and down, and longitudinal waves are like of those of sound, consisting of alternating compressions and rarefactions in a medium.
Explanation: pls mark branliest
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