There are actually two sources: sunlight (from nuclear fusion inside the sun) and radioactive decay inside the earth.
The Sun is the primary source of all energy on Earth.
Nearly all of the energy that reaches Earth's surface comes from the sun.
Nearly all of the energy that earth receives from the sun is used in photosynthesis is true.
Almost all of the energy that affects the climate on the Earth originates from the Sun.
the sun
The Sun is the primary source of all energy on Earth.
The energy from the Sun, solar energy drives all the process important to life on Earth.
Chlorophyll is the source of all food energy on the planet earth.
All the energy on Earth comes from the Sun. All the energy that Earth uses is either stored as "potential energy" or radiated away as heat.
the sun
the sun
With few exceptions, the origin from which all organisms on earth get their energy is the sun.
The energy from the Sun, solar energy drives all the process important to life on Earth.
Nearly all of the energy that reaches Earth's surface comes from the sun.
no , technically no human { animals} is an energy source on earth
All earth's energy comes from the sun.
the sun