Final answer:
Excessive use of chemical fertilizers can negatively impact the environment by causing water pollution, soil degradation, and disruption of the ecosystem.
Step-by-step explanation:
The excessive use of chemical fertilizers by farmers can negatively impact the environment in several ways. Firstly, it can lead to water pollution. When it rains, the excess fertilizers can be washed away into rivers, lakes, and groundwater, causing an imbalance in nutrient levels and harming aquatic life.
Secondly, the use of chemical fertilizers can contribute to soil degradation. Over time, these fertilizers can deplete the organic matter in the soil, making it less fertile and reducing its ability to retain water.
Lastly, the overuse of fertilizers can disrupt the balance of the ecosystem, including the food chain. Excessive nutrients can promote the growth of algae in water bodies, leading to algal blooms that deplete oxygen levels and harm other organisms.
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