You are presented with the quiz "Gases from burning coal and oil dissolving in water in the atmosphere can hurt what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "gases from burning coal and oil dissolving in water in the atmosphere causes acid rain" and "acid rain is very bad and can hurt the environment". 

So, what's the best answer to the question?


 

      environment     