OCR Gateway Science, B6 - 11 - Water Pollution

The grade checker says that you need to be able to: 

• recognise various pollutants of water
• analyse data on water pollution

Keywords: 
----> Eutrophication - excessive growth of plants and algae in water, contaminated with nitrates
----> Indicator Species - species that survive best at a certain level of pollution, and give an idea                                    of the level of pollution.

What pollutes our water?

• Oil which escapes tankers and oil pipelines out at sea.
• Acid rain which lowers the pH of our water.
• Waterproofing chemicals on…