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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