complete the passage. a sound is first produced by making something. the sound then travels through a to…

complete the passage. a sound is first produced by making something. the sound then travels through a to reach the ears, which are the parts of the body that allow for sounds to be heard.
Answer
Brief Explanations:
Sound is produced by vibration and travels through a medium (like air, liquid or solid) to reach the ears.
Answer:
vibrate; medium