Because of the curvature of the earth, microwave systems that ...

[TFauchery]

Because of the curvature of the earth, microwave systems that must travel over long distances need ________.
 
  A) to operate at low frequencies
  B) to operate at high frequencies
  C) repeaters
  D) mirrors

Question 2

Electronic commerce is an interdisciplinary field.
 
  Indicate whether the statement is true or false

[sylvia]

Answer to Question 1

C

Answer to Question 2

TRUE

[TFauchery]

Thanks for the timely response, appreciate it

[ASDFGJLO]

Gracias!