The so-called non-point source pollution refers to the dissolution of solid or solid pollutants from non-specific locations under the washout of precipitation (or snowmelt) into the receiving water body (including rivers, lakes, reservoirs, and bays) through runoff processes. ), And cause eutrophication or other forms of pollution of the water body, is a type of water environment pollution compared to point source pollution. According to the above definitions, Which of the following situations belong to non-point source pollution:. ['Seawater pollution caused by a nuclear leak at a nuclear power plant.', 'Acid rain has caused soil pollution and a large reduction in crop yields.', 'Garbage scattered throughout the countryside pollutes water bodies through precipitation.', 'Industrial wastewater from paper mills is discharged into the lake by sewage pipes without treatment.']