This part of the task is focused on identifying the causes and effects of nitrogen deposition. Understanding these causes and effects is vital for tackling the issue at hand. The following website is a good starting point: Initrogen.org

Feel free to search for additional information on the causes and effects of nitrogen deposition on the internet. When you feel familiar enough with the topic, answer the following questions

• What is the relationship between the use of fertilizer in agriculture and the quality of our surface water?
  The use of fertilizers causes a reduction in the quality of our surface water. Fertilizers travel through the soil and end up in rivers and coastal waters - the result is algal bloom.