What is special about Curitiba?

Geography

Not enough houses which led to favelas forming

What were two negative impacts of the population growth in Curitiba between 1940 and 1960?

Buses have their own lanes, so no traffic

What are three positive features of bi-articulated buses?

Coal, oil and gas are examples of these. They formed millions of years ago.

Which of these descriptions closely matches the term 'renewable energy' ?

Heat from burning living or dead organisms

Biomass energy can be sourced from which of the following?

using resources that are good for people, the environment and the economy both in the present and the future.

using resources that are good for people, the environment and the economy in the present.

using resources that will be good for people, the environment and the economy in the future.

Which type of fuel is more sustainable for cars?