hello guys In this article i am going to tell you about viruses. virus is a microorganism that make it's place between non living and living. it is living because after entering in the living cell whether plant, animal or human it do action like reproduction etc. It is called non living because outside the cell it lies as a non living particle without any actions , and this non living particle called virion. Thus it calls a link between living and non living. Viruses are found at all places like water whether hot or cold, on land and in the air also. it is universal. Structure- As you see one structure it is a image of virus . beside it there are more type of virus as sphericle , rod shaped , comma like and etc. all virus all harmful , some are harmful for plants, some for animals , and some harmful for human also . Virus born disease are somtimes fatel for living. Till now many human , plants and animal virus disease are known. disease- some human disease are common flu(gen