You are presented with the quiz "What happens to aquatic life if acidity is higher or lower than a narrow range?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "all life relies on a relatively narrow range of pH, or acidity" and "if the pH level is higher or lower, aquatic life is endangered". 

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


 

     It is endangered      