1. Industrial wastes
2. Agricultural runoffs
3.Sewage and wastewater
4. Oil spills
5. Mining Activities
6. Urbanisation
7. Global Warming
8. Radioactive waste
9. Dissolved Oxygen
10. Deforestation
1. Industrial wastes
2. Agricultural runoffs
3.Sewage and wastewater
4. Oil spills
5. Mining Activities
6. Urbanisation
7. Global Warming
8. Radioactive waste
9. Dissolved Oxygen
10. Deforestation