{:(,"Column A",,, "Column B"),(A., "Compressions and rarefactions", (), a., "Birds"),(B., "Syrinx", ( ), b., "Sound wave"),(C., "Internal organs", ( ), c., "Noise"),(D., "Sound of thunder", ( ), d., "Surface area of vibrating body"),(E., "Intensity", (), e., "Ultrasonic sounds"):}

{:(,"Column A",,, "Column B"),(A., "Compressions and rarefactions", ()

1.	{:(,"Column A",,, "Column B"),(A., "Compressions and rarefactions", (), a., "Birds"),(B., "Syrinx", ( ), b., "Sound wave"),(C., "Internal organs", ( ), c., "Noise"),(D., "Sound of thunder", ( ), d., "Surface area of vibrating body"),(E., "Intensity", (), e., "Ultrasonic sounds"):}
Answer» Solution :A - B `" "` Sound wave propagates in the FORM of compressions and rarefactions. B - a `" "` Birds produce sound with the help of a ring of cartilage called syrinx. C - E `" "` Ultrasonic sound is used for IMAGING the internal organs of a human body. D - c `" "` The sound of thunder produces noise. E - d `" "` INTENSITY of sound depends on the surface area of the vibrating body.