Quiz on the River Thames Pollution

How many years ago was the River Thames declared biologically dead due to pollution?

• 30 years ago

• 40 years ago

• 50 years ago

• 60 years ago

What was the main cause of cholera deaths between 1830 to 1860 in London?

• Air pollution

• Contaminated food

• Pollution in the Thames

• Lack of medical facilities

What event in 1858 exacerbated the smell of untreated human waste and industrial effluent in the River Thames?

• The Great Flood

• The Great Fire

• The Great Stink

• The Great Storm

What was built after the Great Stink to intercept raw sewage before it reached the Thames?

• A new water treatment plant

• An extensive underground network of sewers

• A series of dams

• A new river channel

How many tonnes of raw sewage were washed into the River Thames in 2013?

• 25 million tonnes

• 35 million tonnes

• 45 million tonnes

• 55 million tonnes

How many species of fish are now present in the Thames, up from almost none in the 1950s?

• 100 species

• 115 species

• 125 species

• 135 species

What new threat is mentioned as a concern for the River Thames?

• Oil spills

• Plastic pollution

• Chemical waste

• Noise pollution