Nats5antidams Nats5antidams

22-12-2016
Physics

contestada

Which of the following does not use electricity or radio waves to communicate?
A.Radio
B.Telephone
C.Pony Express
D.Telegraph

Respuesta :

Erudite1 Erudite1

22-12-2016

All the devices listed above use waves except pony express. Therefore the answer is C.

Answer Link

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