Fact 1: Some viruses can cause cancer.

Fact 2: Leukemias are cancers of the blood.

Given the two facts above, answer the question "what can some viruses cause?" with the following options: 
- extinction
 - anemia
 - wounds
 - leukemia
 - Allergies
 - loss of gravity
 - Dehydration
 - virus protection


 

    leukemia     