ATMOSPHERIC DEPOSITION

• water pollution caused by air pollution is known as atmospheric deposition. 
• in the atmosphere, water molecules combine with carbon dioxide and sulphur dioxide and nitrogen oxides, this forms a weak acid.
• air pollution means that water vapour in the atmosphere is taking in more of this harmful gases and becoming even more acidic.
• so when it rains, the rain which was acidic pollutes the water.
• when water bodies is contaminated by the acidic rain, it pollutes marine habitats such as rivers, lakes and sea. hence, marine life is affected.