• Black
  • White
  • Green
  • Blue
  • Red
  • Orange
  • Violet
  • Golden
Related article
NewsLetter Register
  • Counter :
  • 561
  • Date :
  • 2/5/2011

Fact of the Day: Human Ear

ear

The human ear is most sensitive to frequencies of 1000-4000 hertz, though young ears can hear 20-20,000 hertz.


Other Links:

Language of the birds: Part 1

Language of the birds: part 2

Fact of the Day: Human Foot

  • Print

    Send to a friend

    Comment (0)