Question

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

Answer 1

Radio waves. Microwaves would cook the earth, seismic waves would just cause earthquakes everywhere, and infrared waves would also cook the earth.

Answer 2

B) radio waves

Step-by-step explanation: