Final answer:
NOx emissions cause the formation of acid rain that damages lakes and forests, contribute to ground-level ozone affecting air quality, and lead to eutrophication in coastal waters that depletes oxygen and harms aquatic life.
Step-by-step explanation:
The effect of NOx on the environment includes several detrimental consequences. One of the prominent effects is that NO2 and other NOx gases interact with water, oxygen, and other chemicals in the atmosphere to form acid rain, which is harmful to sensitive ecosystems such as lakes and forests. Additionally, NOx contributes to the formation of ground-level ozone, which can result in unhealthy air quality, particularly on hot sunny days in urban areas. Furthermore, NOx emissions are associated with nutrient pollution in coastal waters, leading to a phenomenon known as eutrophication, which depletes dissolved oxygen levels and harms aquatic life.