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← ScienceWhich cause prevents signal propagation in underwater communication?
A)Electromagnetic absorption increases exponentially✓
B)Signal dispersion affects signal integrity
C)Refraction causes complete signal reversal
D)Seabed reflection increases signal strength
💡 Explanation
Electromagnetic absorption quickly dissipates signal strength underwater along the path because water strongly absorbs electromagnetic waves. Therefore, the exponential decay blocks signal transmission rather than dispersion or reflection, because those usually cause signal interruption at certain frequencies.
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