Answer:
produce sound when they come together and then vibrate as air passes through them during exhalation of air from the lungs. This vibration produces the sound wave for your voice. In order for the sound to be clear and not raspy or hoarse, the vocal folds must vibrate together symmetrically and regularly
Explanation:
B I think. Hope it's correct.
You don’t feel pain, they can show inside of the human body in a easy and effective way.
Answer:
10.Testes is the answer, and 11. ovary is the answer
