Acid rain Acid rain • Acid rain is mostly caused by human emissions of sulfur and nitrogen compounds which react in the atmosphere to produce acids Burning of fossil fuels • This is where most of the nitrogen and sulphur which are the main causes of acid rain come from. • The largest being coal, and coal fired power plants. Effects • It will cause water ways, as well as land to become more acidic thus changing the environment in which life lives. • Aquatic life is the most effected because it is much easier for the acid rain to change the pH of water ways. Atlantic salmon Atlantic salmon • Natural reproducing Atlantic salmon are no longer present in many of the 65 rivers which have their source in the Southern Upland of Nova Scotia and are at reduced levels in all other rivers • The main cause of this is that acid ran has changed the pH of the rivers so much they can no longer live in them. Atlantic Canada • This region in effected larger not because of their own pollutants, but because of the shift of those from the North Eastern US. • The North East has a large amount of industry and burn huge amount of fossil fuels these then drift to Atlantic Canada and react with rain water to form acid ran. Solutions • In recent years laws have come to try and prevent harmful acid rain. • A law regulating the number of Sulphurs or Nitrates put into the atmosphere by industry is one such prevention method • Scrubbers added to power plants to remove harmful emission from the air is another example. International treaty • Sulphur Emissions Reduction Protocol is a treaty like the Kyoto Protocol but it actually worked. • A number of nations signed on and now all control the sulphur they release into the air.