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Refer to figure.
What kind of disturbances may occur in the area marked by the circle in the figure?
  • A
    Absorption
  • B
    Fading and interference
  • C
    Shoreline/Coastal effect
  • D
    Diffraction

Radio transmissions travel through the sky and receive multiple interferences. As shown in the diagram, there are sky waves and ground waves being directed form the transmitter to the receiver.

Fading is a variation of a signal. Fading in radio waves may be caused by multiple interferences such as weather (mainly rain), or shadowing from obstacles affecting the wave propagation.

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