Acid rain is rain made sour by pollution, which kills trees. Damage from acid rain.
It comes mostly from sulphur burnt in power stations and falls hundreds of miles downwind. Acid rain is the clearest case of an international pollution problem being largely solved.
1nounacid rainRain made sour by pollution, which kills trees.
“Acid rain killed whole forests in Germany and Scandinavia.”
acid rain is rain.
Coined in 1872 by the Scottish chemist Robert Angus Smith.
Coined in 1872 by Scottish chemist Robert Angus Smith.
Etymology from Wiktionary, CC BY-SA
Practised in Weather & Seasons