Trachea act as a resonator to amplify sound. In some birds, the tracheal rings are complete, and may even be ossified. In amphibians, the trachea is normally extremely short, and leads directly into the lungs, without clear primary bronchi. A longer trachea is, however, found in some long-necked salamanders, and in caecilians. While there are irregular cartilagenous nodules on the amphibian trachea, these do not form the rings found in amniotes. The only vertebrates to have lungs, but no trachea, are the lungfish and the "Polypterus", in which the lungs arise directly from the pharynx. The word "trachea" is used to
What More Can I Give What More Can I Give "What More Can I Give" (also "Todo Para Ti" in Spanish) is a song written by American singer Michael Jackson and recorded in 2001 by Jackson and a supergroup of singers following the September 11 attacks. The inspiration for the song had initially come to Jackson after a meeting with the President of South Africa Nelson Mandela in the late 1990s. The song was to be premiered at a Jackson concert, but the singer failed to perform it. The song also failed to gain an official release, despite the pop singer having stated that it