High-frequencywaves are a. absorbed by the F2 layer b. reflected by the D layer c. capable of use for long-distance communications on the moon d. affected by the solar cycle

High-frequencywaves are
a. absorbed by the F2 layer  
b. reflected by the D layer
c. capable of use for long-distance communications on the moon d. affected by the solar cycle
by

1 Answer

Answer :

d. affected by the solar cycle
by

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