Now that we know about both prokaryotic and eukaryotic cells, let's look at the endosymbiosis theory. This theory suggests that mitochondria and plastids in eukaryotic cells were once independent prokaryotic cells.
Avian influenza (AI) is an infectious viral disease of birds (especially wild water fowl such as ducks and geese), often causing no apparent signs of illness. AI viruses can sometimes spread to domestic poultry and cause large-scale outbreaks of serious disease.
Avian influenza, commonly called 'bird flu', is the general name for a form of viral disease that affects birds, particularly poultry, and can take two forms: highly pathogenic avian influenza (HPAI) and low pathogenic avian influenza (LPAI) .ats can be susceptible to avian influenza viruses, and research in cats has shown that H5N1 can be transmitted from cat to cat. Do not feed infected, sick or dead chickens to cats or other animals. Dogs have also been infected, but the probability of H5N1 infection in pet animals is low.