Fact 1: Insect bites cause harm to living things.

Fact 2: Some assassin bug bites can cause an allergic, life-threatening reaction in humans.

Given the two facts above, answer the question "What can cause harm to humans?" with the following options: 
- cigarettes
 - viruses
 - steroids
 - air molecules
 - assassin bugs
 - vegetables
 - ladybugs
 - smoking tobacco


 

     assassin bugs    