ꯁꯤꯟ-ꯁꯥꯔꯣꯜ ꯅꯩꯅꯕ: ꯑꯃꯨꯛꯍꯟꯕꯥ ꯈꯦꯠꯅꯕꯥꯒꯤ ꯃꯔꯛ

Content deleted Content added
ꯂꯩ ꯏ ৪২:
 
====ꯈꯥꯝꯕꯤ-ꯃꯩ====
{{main article|Control of fire by early humans}}
The discovery and utilization of [[fire]], a simple [[energy]] source with many profound uses, was a turning point in the technological evolution of humankind.<ref>{{Cite book | last=Crump | first=Thomas | title=A Brief History of Science | year=2001 | publisher=[[Constable & Robinson]] | isbn=184119235X | page=9}}</ref> The exact date of its discovery is not known; evidence of burnt animal bones at the [[Cradle of Humankind]] suggests that the domestication of fire occurred before 1 Ma;<ref>{{Cite web | url=http://whc.unesco.org/pg.cfm?cid=31&id_site=915 | title=Fossil Hominid Sites of Sterkfontein, Swartkrans, Kromdraai, and Environs | accessdate=10 March 2007 | publisher=[[UNESCO]]}}</ref> scholarly consensus indicates that ''[[Homo erectus]]'' had controlled fire by between 500 and 400 ka.<ref>{{Cite web|url=http://www.historyworld.net/wrldhis/PlainTextHistories.asp?historyid=ab10|title=Stone Age Man|last=|first=|date=|website=|publisher=History World|accessdate=13 February 2007}}</ref><ref>{{Cite journal | title=Hominid Use of Fire in the Lower and Middle Pleistocene | last=James | first=Steven R. | journal=[[Current Anthropology]] | volume=30 | issue=1 | pages=1–26 | subscription=yes |date=February 1989 | doi=10.1086/203705 | jstor=2743299}}</ref> Fire, fueled with [[wood]] and [[charcoal]], allowed early humans to cook their food to increase its digestibility, improving its nutrient value and broadening the number of foods that could be eaten.<ref> * Ann B Stahl.
*year=1984
"https://mni.wikipedia.org/wiki/ꯁꯤꯟ-ꯁꯥꯔꯣꯜ_ꯅꯩꯅꯕ" ꯃꯐꯝꯗꯨꯗꯒꯤ ꯂꯧꯈꯠꯂꯛꯄꯥ