what are the real life incidents occured in the past because of acid rain and global warming?
The real life incidents having occured in the past because of acid rain and global warming are actually quite numerous. Regarding the damage caused by acid rain, not only does acid rain have a negative impact on ecosystems, but acid rain can also damage crops (however damage to crops can be minimized with application of neutralizing chemicals). Effects are more acutely felt in isolated marine ecosystems, as alteration of pH levels can have a wide range of effects.
Regarding global warming, while there is some argument for stronger hurricane storms, this is not easily documented in the short term. More easily document are rising sea levels and collapsing ice shelfs. For instance, Shishmaref Alaska is seeing critical erosion occuring as a direct result of rising sea temperatures. Additionally, in the past 2 decades, the Larsen Ice Shelf in Antarctica has seen two major collapses, most recently in 2002. This is again tied to rising temperatures, and serves as evidence that global warming is having real world effects.
I hope this helps.