they heated potatoes over the fire and used them for warmth
Primary sources and secondary sources
Two categories of heat sources are natural heat sources and artificial heat sources. Natural heat sources include the sun, geothermal energy, and volcanic activity. Artificial heat sources include electric heaters, gas heaters, and oil heaters.
legal sources,customery sources,historical.
Main sources of internal heat are Magmatism and Radioactivity.
Corroborated sources of historical evidence. (APEX) !/
All heat sources. Plus extreme cold sources cause burns.
no
There are two sources by which heat is produced in our body.Endogenous sources and Exogenous sources.Endogenous sources heat by our metabolic and muscle activity. Exogenous sources heat when the environmental temperature exceeds our body temperature and that is transferred to our body.
The two classifications of historical sources are primary sources and secondary sources. Primary sources are original, first-hand accounts of an event or topic, while secondary sources are interpretations or analyses of primary sources created by someone not directly involved in the event.
give one of sources of heat explain each one
There are heat sources in a lot of different things. A heat source is something that can heat something else up. There are heat sources in microwaves, ovens, and cars.
That depends how much power each of the heat sources have. Add the power of the two heat sources, and compare with the power of the strong one.