Question

. _____________________ waves are used to send signals because they can travel over very long distances and pass through buildings

Answer 1

Answer:

the answer is electromagnet

Explanation:

Answer 2

Answer:

__________ waves are used to send signals because they can travel over very long distances and pass through buildings.

Explanation:

Radio is your answer.

radio waves are used to send signals because they can travel over very long distances and pass through buildings.