The Sun isn't our primary source of energy. The world still relies on burning fossil fuels as a main source of energy. Solar power only provides one percent of the world's electricity production.
The primary is the sun
the sun
the sun
The Sun is the primary source of all energy on Earth.
all nonrenewable fuels can be traced back to the sun as a primary energy source
the ultimate source of energy for all living organisms is the sun
sun
The Sun.
the sun. Or the sun's radiation.
the primary source of energy is sun.
The sun is not considered to be a primary consumer. The sun is an energy source that is used by primary consumers.
Sunlight is Earth's primary source of energy.