sun is the primary source of heat and light......
The Sun is our primary source of light and heat here on Earth.
The primary source of light on Earth is the Sun. It emits light and heat energy through a process called nuclear fusion in its core. This light sustains life on our planet and allows for photosynthesis to occur in plants.
the sun is the primary source of light
Wood is the first discovered primary energy source. Some believe that Solar energy (as heat caused by sun light) is the first discovered primary energy source.
The sun is the primary source of light for Saturn.
The primary light source is the sun for the planet Earth.
The sun is the source of heat and light for plant-life.
Yes. The primary source.
because its main source that gives it to light is one of the main source of light
Sun is the primary source of heat here in the Earth. As time moves on, human developed new sources of heat and light. Some of it are the torches, lamps, candles and others
EM (or emergency heat) can be used if you have a problem with your other heat source such as a heat pump. In most cases, you will not need this but what it does is bi-passes the primary heat source and allows your secondary heat source (normally your furnace) to become the primary.
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.