Question

Give reasons for the following:
1. Girls have a high-pitched voice.​

Answer 1

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The vibrations and the speed at which they vibrate are dependent on the length and thickness of vocal cords. Women have higher pitches than men as they have shorter vocal cords.

Answer 2

Answer:

Girls' bodies produce testosterone too, but not as much as boys' do. Their bodies also produce another hormone called estrogen (ESS-tro-jen). These hormones make girls' vocal cords get bigger during puberty, but they don't grow as big as boys'. So girls' voices sound higher.