Explain simply why (H) is the correct answer to: How many types can viruses infect?
Options:
- (A) mice
- (B) pigs
- (C) bird
- (D) RNA
- (E) ova
- (F) tiny
- (G) HPV
- (H) Two. Explanation:
Viruses often infect bacteria. Bacteria are normally classified as either 'good' bacteria or 'bad' bacteria. Viruses can infect good and bad types.