1. Explain what is meant by the term "a fossil fuel".
2. Which gases are released by the burning of fossil fuels? For each gas, explain how it can affect the environment.
3. What might be the effects of a 3.5 C rise in global temperature?
4. Renewable energy sources such as wind, biomass and solar energy are now being used or considered in different parts of the world. Write a report on the advantages and disadvantages of these different forms of energy and where they are, or might be, used.
