Which mechanism disrupts wireless signal propagation in a dense urban environment during heavy rainfall?

💡 Explanation

During heavy rainfall, rain attenuation occurs because water droplets absorb and scatter radio waves, leading to significant signal loss over distance. Therefore signal loss due to rain attenuation results, rather than Doppler shift, oxygen absorption exceeding signal strength,, or multipath interference becoming uncorrelated, which are relatively minor effects alone under these specific circumstances.

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