Answers

2015-10-14T22:15:43+05:30
Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, smallpox and hemorrhagic fevers. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves
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question is how do viruses cause diseases
2015-10-14T22:20:36+05:30
When viruses enters in our body it cause our immunity weak so it causes diseases.

hope this may help you....
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