Fact 1: Gases from burning coal and oil dissolving in water in the atmosphere causes acid rain.

Fact 2: Helpful Generalizations Vapors and gases are molecules.

Given the two facts above, answer the question "What from burning coal and oil dissolving in water in the atmosphere causes acid rain?" with the following options: 
- toxins
 - Pollution
 - excretion
 - chemicals
 - citric acid
 - bleach
 - vapors
 - water


 

       vapors  