Fact 1: Aggression is behavior that is intended to cause harm or pain.

Fact 2: Behaviorally, aggression is any behavior whose intent is to intimidate or harm another animal.

Given the two facts above, answer the question "what harms others?" with the following options: 
- aggression
 - cells
 - smoking tobacco
 - water
 - smoking
 - killing insects
 - oxygen
 - cigarettes


 

 aggression        