ICSE Class 6 Answered

The discovery of fire was one of the greatest achievements of the early humans of the Old Stone Age. In the initial period of their existence, humans used naturally caused fires such as bush fires, forest fires and lightning. Later, it was noticed by them that two dry stones when rubbed together tend to produce fire as well. From thenceforth, humans began to produce fire through the use of flint stones. Fire was used to roast meat, to keep warm during cold and to frighten wild animals by keeping a fire burning at cave entrances.