The Earth has two sources of energy, the sun's radiation and heat from inside the Earth. The sun is most important and life could hardly exist except at a very primitive level without it.
because plants get their energy from it and everything else gets their energy from plants
Most of the world's high energy resources are from the conversion of the sun's rays to other energy. Without it, all living things will die.
The Sun is the main and most important energy source.
The sun is the main source of energy on earth.
Producers get their energy from the sun.
We get most of our energy from the Sun.
The sun
the sun
the sun
The sun.
Nuclear energy that is the source of sun energy which in turn is the source of fossil and renewable energies.
The main source of energy is usually considered to be the energy absorbed from the sun (E.G., used in photosynthesis).