Home Discussion Forum What are the two sources of energy for the Earth system?

What are the two sources of energy for the Earth system?

1.lightning and the sun
2.the sun and Earth’s interior
3.the sun and wind
4.Earth’s interior and wind

3 COMMENTS

  1. How are you defining “Earth System?”
    Because 2, 3 and 4 are all decent sources of energy. Solar, geothermal, and wind power.

  2. The sun and the Earth’s interior. The energy causing wind and lightning come from these sources, mostly uneven heating of the earth by the sun.

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