1. THIS PRESENTATION IS ABOUT ENERGY AND ABOUT THE REASONS WHY WE NEED IT. IT SHOWS TWO GROUPS OF ENERGY, ECOLOGICAL SOURCES OF IT AND THE USE OF THEM.
2. WE USE ENERGY TO PRODUCE ELECTRICITY, IN TRANSPORT, TO HEAT THE HOUSES AND TO GIVE LIGHT.
3. THE SOURCES OF ENERGY ARE DIVIDED INTO TWO GROUPS: RENEWABLE (WIND ENERGY, WATER ENERGY, SOLAR ENERGY, GEOTHERMAL ENERGY AND BIOMASS) AND UNRENEWABLE (ENERGY FROM COAL, NATURAL GAS, OIL AND NUCLEAR ENERGY) .