Ingles

Alternatives sources of energy
Everyday, the world produces carbon dioxide that is released to the earth’s atmosphere and which will still be there in one hundred years time.Alternative energyrefers to energy sources that have no undesired consequences such for example fossil fuels or nuclear energy. Alternative energy sources are renewable and are thought to be "free" energy sources. They allhave lower carbon emissions, compared to conventional energy sources. These include Biomass Energy, Wind Energy, Solar Energy, Geothermal Energy, Hydroelectric Energy sources. Combined with the use ofrecycling, the use of clean alternative energies such as the home use of solar power systems will help ensure man's survival into the 21st century and beyond. Home security and home independency arethe catch cries of the new era in sustainable development and self sufficiency.
Advantages and Disadvantages of alternatives sources of energy
One major advantage with the use of renewable energy isthat as it is renewable it is therefore sustainable and so will never run out.Renewable energy facilities generally require less maintenance than traditional generators. Their fuel being derived fromnatural and available resources reduces the costs of operation.The disadvantage of renewable energy sources is the reliability of supply. Renewable energy often relies on the weather for its sourceof power. Hydro generators need rain to fill dams to supply flowing water.

Examples of the topic
SOLAR POWER:
Solar energy is one the most resourceful sources of energy for the future. One of thereasons for this is that the total energy we recieve each year from the sun is around 35,000 times the total energy used by man.

Geothermal Energy:
Geothermal energy is the heat stored inside theearth and the energy is derived from the transfer of heat from the core to the surface of the Earth. Geothermal energy is relatively economic, but not readily available or obtainable.

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