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1. 

- Hydro:

+ Advantages: clean, safe, abundant.

+ Disadvantages: expensive.

- Nuclear:

+ Advantages: renewable, clean.

+ Disadvantages: expensive, dangerous.

- Solar:

+Advantages: renewable, abundant, clean, safe.

+ Disadvantages: expensive, difficult to restore.

- Wind:

+ Advantages: abundant, safe.

+ Disadvantages: not always available, difficult to restore

2.

- Two. They are renewable and non-renewable sources.

3.

- They are water, coal, oil, gas, biogas.

4.

- Renewable energy is energy from continuous sources that according to human standards are limitless such as solar, wind, rain, tidal, wave and geothermal energy.

- Non-renewable energy, also known as "dirty" energy, is generated from fossil fuels such as oil, gas and coal. Non-renewable energy sources are only available in limited amounts and will disappear over time.