How many deaths is it estimated are caused by air pollution in Rio each year?

On which coastline is Rio?

Which city is the most congested in the whole of South America?

In Rio, by what percentage has car ownership grown over the last decade?

To reduce congestion on coastal raods what have the authorities in Rio done to improve traffic flow?

Rio’s Guanabara Bay, is highly polluted. By how much has commercial fishing declined in the last 20 years?

How many polluted rivers flow into Guanabara Bay?

Approximately how many tonnes of raw serage pours into Guanabara Bay each day?

Approximately how many tonnes of industrial waste pours into Guanabara Bay each day?

Which of the following is NOT one of the reasons that Guanabara Bay is polluted?

What is the term that describes the pollution haze that hangs over the city of Rio?

What disease is likely in the favelas due to waste being dumped into the open sewers?

To combat the refuse problem a power plant has been set up utilising the gas from rotting rubbish. What is the gas called?

A new power plant plant has been set up to use the gas from rotting rubbish from the flavelas. How many tonnes of rubbish does it use each day?

What is the term used to describe the gradual increase in the concentration of phosphorus, nitrogen, and other plant nutrients in Guanabara Bay?