The Sun.
sun is the primary source of heat and light......
A letter is a primary source.
The primary light source is the sun for the planet Earth.
it is a primary source because it wasnt real
The Sun
our primary source comes from the sun.
Original letters or documents, for example. A secondary source would be an essay, for example, about the original source.
A primary source is original information created at the time of the event being studied, such as diaries, letters, photographs, or speeches. An example of a primary source would be a firsthand account from someone who witnessed an event.
Diaries
our primary source comes from the sun.
our primary source comes from the sun.
The term "primary source" is defined in research as an original or first-person account. In logistics, it indicates the origin of the major supply for a necessary raw material or product. Example : "The primary source for his essay was an eyewitness account of the event." Example : "For many decades, Rhodesia was the primary source of the world's chromium."