Hormones reach necessary parts of the body through.
Tubes which carry hormone alone
Nerves which carry hormone alone
Bones
Blood which carry other substances also
What is true about voice in adoloscent boys and girls.
High pitched voice in girls and low pitched in boys
Low pitched voice in girls and high poitched in boys
Both boys and girls have same pitch in their voice
The pitch of the voice does not change during adolescence but changes with individuals