Our oceans are becoming 1_______ polluted. Most of this 2_________ comes from the lands, which means it comes 3______ people. First, there is raw sewage, which is 4______ directly into the sea. Many countries, both developed and developing, are guilty of 5_______ this. Secondly, ships drop about six million tons 6_________ garbage into the sea each year. Thirdly, there are oil spills from ships. A ship has an accident and oil leaks from the vessel.
This is not 7______ pollutes the water, but it also kills marine life. Next, there are 8________ materials from factories. Without proper regulations, factory owners let the waste run directly 9______ the rivers, which leads to the sea. And finally, oil is washed from the land. This can be the result of 10__________ or a deliberate dumping of waste.