If you mean sources like wind and solar energy, they are renewable because they don't consume fuel which is non-renewable, they don't emit greenhouse gases, and the sources of energy are free.
That is because the law of conservation of energy states that you can not create new energy.
Coal and all types of fossil fuels.conventional sources mean that was traditionally known to people.
what is origin of non-renewable energy sources, including how energy became trapped in these souces
How about: 'Energy sources are essential for an industrial economy'
I think it can refer to either.
If you mean sources like wind and solar energy, they are renewable because they don't consume fuel which is non-renewable, they don't emit greenhouse gases, and the sources of energy are free.
That is because the law of conservation of energy states that you can not create new energy.
Alternative resource is the new renewable or inexhaustable energy source;includes solar energy, wind, and geothermal energy.
energy derived from sources that do not use up Natural Resources or harm the environment
You don't say which energy source(s) you mean!
What are iran's energy sources?
Coal and all types of fossil fuels.conventional sources mean that was traditionally known to people.
The energy sources that I am most excited about all have lower carbon emissions, compared to conventional energy sources. These include Biomass Energy, Wind Energy, Solar Energy, Geothermal Energy, and Hydroelectric Energy sources.
Is wind and sun a pair of sources of energy
what is origin of non-renewable energy sources, including how energy became trapped in these souces
There are many of energy sources in earth like solar energy, geothermal energy, hydroelectricity, tide energy, nuclear energy.