Sun water and wind are alternative sources of energy. Wind rotating the windmill and moving the sail . It's a clean source and a lot of energy . Unfortunately, if the wind does not blow . there is no wind energy. As water moves from one place to another , it makes energy. However, people have to build dams to use this energy source. The dams cost a lot of money , so water is expensive too.

The sun releases large amounts of energy each day. This energy can be converted into electricity . Mary countries use solar energy for their daily lives. Solar panels on the roof can generate enough energy to heat or cool the antire home . Solar energy is not only abundant and infinite but also clean and safe .

Desfite some drawbacks , the potention of onternative energy sources is enormous . However , how to make full use of the energy resources is a question for researchers all over the world.

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The Earth's resources are progressively depleting. Resources are becoming increasingly scarce, thus scientists are investigating and seeking for new ones. Wind is utilized to generate electricity in temperate climates due to the abundance of wind. Due to the abundance of sunshine in tropical countries, the sun is used to generate power. And, instead of using water to generate power, many countries around the world employ other resources.