1. Not renewing power sources

3. The non-renewable energy source is a natural resource that has no mechanism for regeneration or if there is, the human scale takes a long time too. Non-renewable energy sources are not manufactured, grown, or reused in an approximate consumption rate. Typically, non-renewable energy sources to fossil fuels (coal, oil, natural gas, liquefied petroleum gas) and uranium as nuclear energy is used as substrate. Renewable energy sources such medium, material, natural phenomenon, which continuously or repeatedly available several times a day, by contrast, reproduced or at most a few years without significant human intervention. The use of non-renewable resources raises many problems which are not consistent with the sustainable development of humanity. These limited energy resources can be found on or under the surface of the earth, excavated more costly, their use is becoming more környezetszennyezőbbé. The use of fossil fuels, primarily because of emissions resulting from the combustion of carbon dioxide in the earth's atmosphere will significantly change the composition of which is likely to contribute to climate change. The nuclear power plant spent fuel elements are radioactive substances that are dangerous and which are safe storage of expensive and many generations to cause the organisms remaining health risk. Given the current and growing energy demand of mankind, the non-renewable energy sources has been a long time not able to satisfy the total demand.

7. Thanks for watching By: Levente Ravasz and Roland Durkó