what do people transmit when using telephones for communication?
internet signals diseases fibers SNPs power waves energy h2o
A B C D E F G H
Sound Sound waves are mechanical waves.
telephones are used for communication by two people transmitting waves
what do people transmit when using telephones for communication? (A) internet signals (B) diseases (C) fibers (D) SNPs (E) power (F) waves (G) energy (H) h2o