There is a big difference between external and internal respiration. External respiration is basically the transfer of gas between respiratory organs such as lungs and the outer environment. It takes place prior to internal respiration. Internal respiration is the transfer of gas between the blood and cells.
Whatever happened to Julian Lennon? After seven years away from the limelight - a time spent getting his life back together after a disillusioning experience with pop stardom' - the son of a beloved rock icon returns to the public eye and ear with his own record label and a new album, Photograph Smile.
John Lennon, right, pictured with Yoko Ono, left, was shot dead outside his New York apartment 35 years ago. Mark David Chapman, pictured, admitted murdering the former Beatle to become famous. Lennon was hit four times outside the Dakota Building in New York City, pictured, where he lived with his family.