Answer:
B. Fertilizers
Step-by-step explanation:
Adding fertilizers causes eutrophication which leads to nutrient glut.
- The use of fertilizers in farmland can lead to addition of significant amount of nitrogen and phosphorus into nearby water bodies.
- Fertilizers are made up of nitrogen and phosphorous compounds.
- When the fertilizer is washed into streams and lakes, they cause the rapid increase in nitrogen and phosphorous in the water.