Q
QuestionBiology

"Why are viruses considered to be nonliving? A. They have no genetic material. B. They cannot reproduce without a host cell. C. They do not respond to their environment. D. They cannot use energy."
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Answer

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Step 1
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Step 2
: Understand the characteristics of living organisms

Living organisms typically have several key characteristics: - Contain genetic material - Can reproduce independently - Respond to environmental stimuli - Use and metabolize energy - Grow and develop - Maintain homeostasis

Final Answer

Explanation: Viruses lack independent reproductive capabilities and must use host cell machinery to replicate, which fundamentally distinguishes them from living organisms.