this post was submitted on 24 May 2026
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there are 3 sources of energy on the surface of earth:
so, the thing is that earth's internal heat generates 0.03% of the energy on the surface of Earth (source) while i couldn't find any numbers for the moon (so i guess it's too low to mention). so basically everything comes from the sun.
and this is true for living beings. living beings can live off the sun's energy (photosynthesis) or they don't, in which case they're utilizing Earth's internal processes (volcanoes, ...) as an energy source.
basically all life was dependent on energy from inside the Earth before photosynthesis was developed, which is severely restricted. this is why this is such a big breakthrough.