Whilst for bioheat, for example, the origin is ourselves ... replaced the conventional 2-tier renewable and non-renewable energy sources classification.” This content is protected by copyright ...

The difference between renewable and non-renewable sources Why we need new ... over again and will never run out. For example wind, solar or tidal energy. Non-renewables come from energy sources ...

for example, are such sources that are constantly being replenished. Renewable energy sources are plentiful and all around us. Fossil fuels - coal, oil and gas - on the other hand, are non ...