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.
Viruses are more difficult to treat because they are able to use our host cells to replicate themselves and spread very quickly. With bacteria, they can replicate themselves very quickly but they do not enter our own cells.Viruses also have a very high mutation rate.ou are correct in that viruses are smaller than bacteria, but that is not really why they are more difficult to treat. Viruses are much, much less complex than bacteria. They don't have nearly as many genes compared to bacteria.