Question

Which of the following affects the surfaces of historical buildings made out of sandstone or limestone, and causes a reaction that forms a powdery substance that can be washed away by rain?

coal dustsulfur pollutantsvolcanic ash none of these were mentioned in the reading

Answer 1

Answer: sulfur pollutants

Step-by-step explanation:

Answer 2

I'm pretty sure it would either be sulfur or pullutants