Are Viruses Life Forms?

When we think of life, we usually think of the basics; Plants and Animals. It is, of course, much more complex than that. There is a massive amount of Kingdoms of living things, all different in many ways, all unique, but they all have one thing in common; The Cell.
The Virus, the focus of this paper, does not contain cells, and given it's size, it is not a cell. This is why, in my opinion, Viruses must not be considered living things.
But what is life? Many groups and induviduals have different opinions of what the qualities of living things are, but they are all generally the same.
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