The document discusses renewable and non-renewable energy sources. It lists various renewable sources like solar, wind, hydroelectric, and geothermal energy. It notes pros and cons of both renewable and non-renewable sources. Renewable sources are abundant and clean but have high initial costs, while non-renewable sources are easy to use but will eventually deplete and release pollutants. The document promotes renewable energy to protect the environment for future generations.

2. Alternative energy

3. Energy is: the ability to do work Let’s look at some sources of energy:

5. Non Renewable Renewable

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19. Pros cons easy to use can use small amount of nuclear energy to produce large amount of power have little or no competition at all will expire some day release toxic gases in the air prices of these sources are soaring day by day

20. energy which is generated from natural sources i.e. sun, wind, rain, tides and can be generated again and again as and when required. They are available in plenty and are by far most the cleanest sources

21. available in the abundant quantity and free to use have low carbon emissions don't have to rely on any third country for the supply can cost less than consuming the local electrical supply Incentives for those who want to go green

22. Initial costs are quite steep Solar energy can be used only during the day time Geothermal energy can bring toxic chemicals beneath the earth surface onto the top Hydroelectric can affect natural flow and affect wildlife Wind turbines rely on strong winds and can affect bird population

23. protect our environment from drastic changes save the depleting resources for our future generations http://www.dailymotion.com/video/x7vqmd_renewable-energy-solutions_news