You are presented with the question "What from burning coal and oil dissolving in water in the atmosphere causes acid rain?" and the following answer choices: 
- toxins
 - Pollution
 - excretion
 - chemicals
 - citric acid
 - bleach
 - vapors
 - water

Now knowing that gases from burning coal and oil dissolving in water in the atmosphere causes acid rain and helpful Generalizations Vapors and gases are molecules, choose the best answer.


 

       vapors  