Complex sentence: Water pollution in New Zealand is an increasing concern for environmentalists and regulatory bodies.But most important dairy farming in New Zealand is linked to an increase in water pollution, and siltation due to land clearance has affected lakes, rivers, caves and bays.
Split into simpler sentences: Water pollution in New Zealand is an increasing concern for environmentalists and regulatory bodies. An increase in dairy farming in New Zealand is linked to an increase in water pollution, and siltation due to land clearance has affected lakes, rivers, caves and bays.