Answer:
c. Excess fertilizers run off into rivers and create a dead zone.
Step-by-step explanation:
One very clear cut example of how the same chemicals used to help people can harm the environment is shows is through the excess fertilizers that run off into rivers and create a dead zone.
- Fertilizers are chemical substances that are used to increase farm yield.
- They are rich in nutrients that plants would need to ensure their proper growth.
- When these fertilizers gets washed into water bodies, the cause enrichment and a nutrient glut.
- It takes a lot of energy and oxygen to break them down thereby leading to a dead zone formation.