RENEWABLE AND NON-RENEWABLE ENERGY SOURCES

We can classify the main energy sources into two groups:

Renewable energy sources. These sources will never run out. We can use them again and again, for example, the Sun, water and wind.

Non-renewable energy sources. These sources will run out. We consume them faster than they are made, for example, coal, natural gas and petroleum.

Renovable sources of energy http://www.wikisaber.es/Contenidos/LObjects/renewable_sources_of_energyEN/index.html

Non-renovable sources of energy

http://www.wikisaber.es/Contenidos/LObjects/non-renewable_sources_of_energy_en/index.html