My guess would have to be hydropower, since water isn't an un natural substance
I'm not quite sure what you mean by which sphere, but I found that the most abundant gas on earth is nitrogen at 78%. Hope this helps
It acts like its nothing there .
Answer:
molten rock in the earth's crust. 1. The blazing magma was surging by us. 2. With the temprature cool, magma would be hardened into rock.
