Answer:
Viruses. no metabolism not alive can not be killed ... The symptoms from a viral infection occur when the virus is in a lytic state. steps: attachment- ... biosynthesis- phage DNA directs synthesis of viral components by host cell ... Viral DNA destroys Cell DNA, takes over cell functions and destroys the cell.
The correct option is D.
A natural law refers to a description of natural event that has been proved to be true without exception. Such a law usually generalizes a body of observation but can not explain why the observation occur. An example of a natural law is Newton's law of gravity, he observed that an object thrown up usually come down but can not explain the reason behind this observation.
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