Fact 1: Global warming is when worldwide temperature increases.

Fact 2: Corrosion always increases with increasing temperature.

Given the two facts above, answer the question "What event has an effect on corrosion?" with the following options: 
- global warming
 - heating liquids
 - Greenhouse gasses
 - flow of electrons
 - chemical reaction
 - rain or sun shine
 - Cooking
 - evaporation


 

 global warming        