the sun?
sun is the primary source of heat and light......
The sun is the source of heat and light for plant-life.
We're modestly familiar with the source of heat and light. And we know that heat and light both exist and are real. Cold and darkness do not exist. They merely describe the lack of heat and light, respectively.
The main source of light is the sun
A light source is a form of energy produced by heat.
Yes, the sun is the origin of heat and light in our biosphere.
both
The planet get its light from their internal heat source.
To absorb or capture heat or light energy from a source.
Yes, a torch can be a source of both light and heat. The light is produced by the flame or the electric bulb, while the heat is generated by the burning fuel or the electric components.
The sun
sun