Fact 1: Insect bites cause harm to living things.

Fact 2: Insect bites are another source of poisoning.

Given the two facts above, answer the question "poisonous substances can cause what to come to living things" with the following options: 
- health
 - higher nitrogen
 - cancer
 - Injury
 - toxins
 - death
 - cell growth
 - harm


 

        harm 