Fish are vertebrate animals, that is, they all have a vertebral column or âspineâ. There are two main groups of fish, bony fish (Teleosts) and cartilaginous fish (Elasmobranchs). As the common names imply, the skeletons of teleosts are made of bone while the elasmobranchs have cartilaginous skeletons.
Villard found a third type of radiation from pitchblende: gamma rays, which were much the same as X-rays. Then in 1896 Pierre and Marie Curie gave the name 'radioactivity' to this phenomenon, and in 1898 isolated polonium and radium from the pitchblende.
The CIH virus, also known as Chernobyl, was first discovered in 1998 June in Taiwan. According to the Taipei authorities, Chen Ing-hau wrote the CIH virus. The name of the virus derived from his initials. It did most of its damage within a few months of ExploreZip and Melissa 's appearance.