Viruses are not considered living organisms because they lack some of the basic characteristics of life.
The cell is described as the smallest unit of life. Since viruses are not alive, we can infer that they do not contain one or more cells. Viruses have a protective protein coat, which can be considered a defined boundary.
Viruses are not capable of producing or using their own energy. They only activate when they come into contact with a host cell and then use the host cell's energy.
As per the pattern, viruses do not have internal organization nor metabolic processes which would allow for growth, therefore, viruses do not grow nor do they produce waste in any form.
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