Fact 1: Intense heat has a negative impact on an organism.

Fact 2: Bacteria are killed by intense heat for a certain time.

Given the two facts above, answer the question "What hurts bacteria?" with the following options: 
- Hot temperatures
 - Abnormal cell growth
 - Cool air
 - Warm water
 - Room temperatures
 - prolactin release
 - some viruses
 - Pollution


 

 Hot temperatures        