Question

Q: what is the layer of the atmosphere which reflects the radio waves back to the earth called

Answer 1

ionosphere is that layer

Answer 2

ionosphere
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the layer of the atmosphere which reflects the radio waves back to the earth called ionosphere

1)as there are ions present in this region it is the named as ionosphere and these ions are responsible for the  reflection of radiowaves

2)it is helpful in the means of communication