vocabulary 1 Answer the questions. a. What do these pictures show? 1. ........................................................................................... 2. ........................................................................................... 3. .......................................................................................... 5. ........................................................................................... 6. .......................................................................................... b. What types of fuels are these? 4. ........................................................................................... c. What kind of alternative energy are they exploiting? 7. ........................................................................................... 8. ........................................................................................... 9. .......................................................................................... d. What kind of environmental problems are these? 10. ........................................................................................ 11. ........................................................................................ 12. ...................................................................................... 254 Think green MechPower.indb 254 30/01/24 17:09