Comments by "David Elliott" (@davidelliott5843) on "7 Deepest Places on Earth" video.

  1. Heavy elements migrated down while the earth formed. It’s nuclear fission which powers our plate tectonics and magnetic field. Venus is closer to the sun so has even more fission and far too many volcanoes for life. Mars is too far out so does not have enough fission. It went cold billions of years ago.
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