The two sources of energy are the sun and energy from the Earth's Interior.
Two main sources of energy for processes in Earths spheres are;
1. Solar Energy (sun).
2. Magmatism (Geothermal Energy from radioactive disintegration.)
By definition, there can only be one MAIN source of energy, thus your question makes no sense. On Earth the main source of energy is that coming from the Sun.
the sun and Earth's interior
solar system and gas
The Sun and the inner earth.
The main sources of energy in Canada are oil, hydroelectricity, and solar power.
Coal and uranium
The main sources of energy include coal, crude oil, natural gas,water, and wind...
solar energy
In the state of Louisiana, natural gas is the main source of energy. The state's second leading source of energy is coal.
the biosphere, the atmosphere, and the geosphere
sun, water, wind.there may be others, but those are some of the most typical
The main sources of energy in Canada are oil, hydroelectricity, and solar power.
Nope the sun is the earths main source of energy
The main energy source is the sun
solar, wind, geothermal
Uselessness
fat
The main sources of chemical energy are compounds. Some of the common energy sources include gas, food, oil and so many more.
The main sources are hydro-electric, natural gas and oil.
Coal and uranium
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