The immediate source is mainly the sun. The original source was the big bang which created the universe and powered it. The big bang was responsible for all of the solar systems, for the motion which creates heat in the earth through tidal effects, and for nuclear elements which create heat in the earth as they decay.
The sun is the major external source of energy.
electron
sun
the sun
The SunThe radiation we receive from the Sun. Most of the energy we use comes from there.
The primary source of Earth's energy is the sun. This energy is called solar energy, which is harnessed through various processes like photosynthesis, wind energy, and solar panels.
Directly or indirectly from the sun
radiation received from the Sun!! :D
From a close star called the sun
The energy can come from just about any source of AVAILABLE energy.
the primary source of energy is sun.
The sun, respiration, photosynthesis and food are all sources of energy for living things.