Discovered in the late 1800s and fundamental to important technological advances of the 20th century, _______ silently transmit information all over the world to extend human communications.
A) microwaves
B) radio waves
C) seismic waves
D) infrared waves
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Discovered in the late 1800s and fundamental to important technological advances of the 20th century, _______ silently transmit information all over the world to extend human communications.
A) microwaves
B) radio waves
C) seismic waves
D) infrared waves
Answered by
2
Discovered in the late 1800s and fundamental to important technological advances of the 20th century, _______ silently transmit information all over the world to extend human communications.
A) microwaves
B) radio waves
C) seismic waves
D) infrared waves
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