Fact 1: Populations of viruses do not grow through cell division because they are not cells.

Fact 2: Influenza is a disease caused by viruses.

Given the two facts above, answer the question "The cause of what doesn't grow by cell division?" with the following options: 
- drought
 - Influenza
 - resistance
 - adding heat
 - Leptospirosis
 - fungi
 - bacteria
 - heat produced


 

  Influenza       