Answer:
When there is excessive nitrogen then it will have negative effect on aquatic ecosystem because of the over nutrition in aquatic system.
Step-by-step explanation:
- Nitrogen will drain away from soil and make the concentration of nitrogen high in water.
- This harms aquatic system by excessive growth of algae which will over shows the water surface and eventually block sunlight which is require for another aquatic organism.
- When those algae die, during decomposition, oxygen is consumed which will deficit oxygen for other organisms.