Question

What do you understand by acid rain how it is harmful

Answer 1

rain becomes acid rain when the droplets of water counter the harmful acidic substances such as nitrogen sulphide, etc., present in air. At that time the rain becomes acidic as toxic acids gets mixed with rain water.
Acid rain is harmful because it degrades the monuments and it results to be very harmful for plantations.
hope it helps....

Answer 2

acid rain the in harmful gases in atmosphere when the rain fall come then it come together in harmful gases it harmful for our body and enviornment