Our occans are becoming extremely polluted. Most of this pollution comes from the land, which means it comes from people. First, there is raw sewage, which is pumped directly into the sea. Secondly, ships drop about 6 million tons of 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 not only pollutes the water, but it also kills marine life. Next, There are waste materials from the factories. And finally, oil is washed from land. This can be result of carelessness or a delibrate dumping of waste. Questions:
1. Where does most of the pollution come from ? ...
. 2. Which is pumped directly in to the sea ?
3. How many tons of garbage do ships drop into the sea each year?