Solar Radiation
solar energy and energy from fossil fuels
solar energy
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sun
the sun because it gives energy to every living thing on earth
solar energy and energy from fossil fuels
the sources of heat is the sun and the solar system this makes the earth have heat and energy. The sun is the earth main source of heat and energy
The main sources of energy in Canada are oil, hydroelectricity, and solar power.
The two sources of energy are the sun and energy from the Earth's Interior.
The main energy source is the sun
solar, wind, geothermal
Uselessness
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solar energy
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.
The Sun