One of the reasons for the success of the smallpox eradication campaign was that small pox only occurred in humans. Smallpox is an extremely contagious and deadly virus for which there is no known cure. it is caused by two variants, Variola major and Variola minor. it is a disease of the past that was eliminated by worldwide vaccination.
If the organism has a cell wall it is a plant
i think it is called the nuclear envelope, but I am not sure...
Hope this helped :)
They say that is the individual who is a person who once lived but is now dead and studied genetics know as Gregor Mendel
