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6. Disadvantage of fossil fuels

  • They are finished
  • They contribute to global warming
  • They are too old to use
  • They are expensive

7. Disadvantage of biofuels

  • Can be expensive
  • They will run out
  • They are finite
  • They are non-renewable

8. Advantage of fossil fuels

  • They meet on-demand supply
  • They can be replenished
  • They are renewable
  • They are expensive

9. Disadvantage of wind power

  • They work in any condition
  • They are unreliable
  • They are non-renewable
  • They are finite

10. Advantage of hydro-electric

  • It does not produce carbon dioxide
  • It produces greenhouse gases
  • It works anywhere
  • It does not need water to work

11. Advantage of solar power

  • It is renewable
  • It is a finite resource
  • It is expensive to run
  • It is cheap to buy

12. Disadvantage of hydro-electric

  • It produces greenhouse gases
  • It only works when reservoir has water in it
  • It is non-renewable
  • It produces carbon dioxide

13. Advantage of wind power

  • They can produce lots of energy
  • They are renewable
  • They are cheap
  • They are most reliable

14. Advantage of nuclear energy

  • They last forever
  • They are not hazardous
  • No greenhouse gases are produced
  • They are renewable

15. Disadvantage of tidal power

  • They do not work in water
  • They are finite
  • They don't always match daily consumptions patterns of electricity
  • They are expensive

16. Disadvantage of solar power

  • It will not last a long time
  • It is expensive to run
  • It only works when it is sunny
  • It is a finite resource

17. Advantage of tidal power

  • They have no moving parts
  • They are cheap
  • They are easy to install
  • They work on land