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Some viruses are beneficial in that they have commercial uses. Examples are tulips with streaks of color. Other viruses cause diseases such as colds, HIV.

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11y ago
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12y ago

No. some viruses like the Bacteriophage ,instead of infecting us, infect the bacteria and devour it.

This is a bacteriophage.

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13y ago

Harmful

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Q: What are the useful and harmful effects of viruses?
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