I believe it's aerobic exercise.
Answer:
Towards the southern of the sound
Explanation:
As the motion of the source of sound is moving,the percieved sound frequency varies .this is known as Doppler effect.the sound waves emited by the sources tends to bunch up in front of the source and spread out behind the source.
Since the falcon is moving towards the sound,the frequency increases and so does the pitch of the sound
From what i learned, it was thought to be CFCs (chlorofluorocarbons), so aerosol sprays i guess
