Fact 1: Some parasites kill their host, but most do not.

Fact 2: Parasites include lungworms and GI parasites.

Given the two facts above, answer the question "What can kill their host?" with the following options: 
- cigarettes
 - bacteria
 - adding heat
 - heat or cold
 - burning
 - Dehydration
 - lungworms
 - Pollution


 

       lungworms  