| The emissions from tall stacks disperse pollutants into the upper atmosphere, contributing to transboundary pollution, such as acid rain. |
| Oxides of sulfur and nitrogen react with water vapor in the atmosphere and then are precipitated out as acid rain. |
| For example, emissions of sulphur dioxide by one state will be carried by winds and deposited as acid rain on downwind countries. |
| Power generated from fossil fuels causes smog, mercury pollution, acid rain and global warming. |
| Other aviation gases include hydrocarbons, nitrogen oxides, and sulfur dioxide, which contribute to acid rain. |
| Scientific work in the 1970s and 1980s into acid rain had a strong effect on arousing governments and the public, and reducing sulphur emissions. |
