Read the passage and answer the question:

Regional variations and the increasing scarcity of freshwater in some parts of the world point to the possibility of disagreements over shared water resources as a leading source of conflicts in the 21st century. Some commentators on world politics have referred to ‘water wars’ to describe the possibility of violent conflict over this life-sustaining resource. Countries that share rivers can disagree over many things. For instance, a typical disagreement is a downstream (lower riparian) state’s objection to pollution, excessive irrigation, or the construction of dams by an upstream (upper riparian) state which might decrease or degrade the quality of water available to the downstream state.

Which of the following is a Coastal environmental issue?

All of the above

The correct answer is Option 4 - All of the above

Option 1- Overexploitation of Fish and Marine life
Option 2- Degradation of Seabed and Fish population.
Option 3- Terrestrial pollutants carried in by the rivers.
Option 4- All of the above

Coastal environmental issues:

• Overexploitation of Fish and Marine life.
• Terrestrial pollutants carried in by the rivers.
• Degradation of Seabed and Fish population.
• Over mechanization.
• Pollution from industry off the coast.
• Effluent from aquaculture farms pollutes the surrounding marine environment.