In the wild, the only tiger subspecies in the wild that have been observed to carry the white color is the Bengal tiger. Even all the white tigers that have been held captive are partly Bengal in subspecies. It is believed that the rare recessive gene that carries the white color comes from Bengal tigers only.
It is difficult to classify viruses as living organisms because they are not made of cells. They only become alive when they find a host i.e. a living cell to live in.ome algae are difficult to classify because they sometimes do not properly fit in one of the kingdoms since they may have characteristics from a few of the kingdoms.
We must r â¦ ely on the ability of our immune systems to render the virus particles inert/inactive by blocking their entry into our cells with antibodies, or rely on vaccines to prevent the viral infections. In addition, it is difficult to prevent infections by viruses that easily mutate, such as the common cold.They mutate so rapidly and into so many different forms it is not possible to create a vaccine before the virus has mutated again.This is also one of the reasons why we need an annual vaccination for the flu.ome algae are difficult to classify because they sometimes do not properly fit in one of the kingdoms since they may have characteristics from a few of the kingdoms.