The rain becomes so action by politicians, who, in turn, accepted the acidic that it damages the environment when recommendations of the scientific community and it falls to the Earth. [...] Oxygen, present in the air, of SO2 (e.g., volcanoes) and NOX (e.g., forest combines with the sulphur and nitrogen in the fires, soil and lightning), human activities are fuel to form many different compounds of responsible for the majority of the emissions sulphur and nitrogen, including sulphates and put into the air. [...] In eastern North the pollutants from the air; rather, they would only lift the pollutants into the prevailing winds and increase the time the America, weather systems generally pollution stayed in the air. [...] The large amount of acids and should be noted that, while sulphate chemicals suddenly entering the water causes a deposition is the primary cause of acidified drastic change to the pH of the lakes. [...] The ability to absorb calcium for the development of bones and shells is reduced in acidic water, leading to CHAPTER THREE: THE EFFECTS OF ACID RAIN 17 the extinction of some species in affected lakes.