Renovable energy
by melissa Rubiano
1. Benefices and desadventajes
2. renewable and not renewable resorces
3. They do not contaminate, do not need to guard his residues during million years and are energies of sources that are inexhaustible
4. the Initial investment, the availability and some resources possess a diffuse nature
5. Alternative energy sources
6. Climate change
7. Alteration of the composition of the world atmosphere
8. The principal reasons have been the burning of fossil fuels and the changes in the use of the land, which carbon dioxide (Co2) and other greenhouse gases have liberated
9. electric energy as a solution to the pollutant nuclear power or to those who consume fossil fuels
10. solar energy
11. eolian energy
12. Not renewable resorces
13. hidraulic energy
