PLS HELP
The speed at which the sound from whales singing underwater would travel is faster than the speed of which of the following sounds?
A. seagulls squawking in the air above the whales
B. sounds transmitted through a metal cable on the ocean floor
C. the noise of an underwater propeller from a boat full of whale watchers
Curtains over a window are an example of .
A. transmission
B. a medium for light
C. how light waves do not require a medium
D. a substance that does not transmit a wave=