हाईस्कूल सामाजिक विज्ञान : उदयवीर सक्सेना द्वारा हिंदी पीडीऍफ़ पुस्तक – सामाजिक | High School Samajik Vigyan : by Udayveer Saxena Hindi PDF Book – Social (Samajik)
Pustak Ka Vivaran : Uttar -aag ki khoj uttar pashan kal ki ek mahatyapurn. Ghatana hai. Aag ki khoj ne aadi manav ke jeevan mein krantikari parivartan kar diye. Aag ki khoj ne manav ko jangali pashuon se suraksha pradan ki. Aag ki khoj se manav kachche mans ke sthanan par use bhoonkar khaane laga. Aag ki sahayata se manushy apane rakhane kee guphaon ko garm karake sheet se raksha karane laga tatha aang se manushy ratri mein aur andhere ke sthan mein prakash karane laga. Is karan bhi usaka jeevan pahale……..
Description about eBook : Answer – The discovery of fire is an important event of the Late Stone Age. The discovery of fire made revolutionary changes in the life of the primitive man. The discovery of fire provided protection to humans from wild animals. With the discovery of fire, humans started eating roasted meat instead of raw meat. With the help of fire, man began to protect himself from cold by heating the caves of his keeping, and with the help of fire man started lighting up the night and the place of darkness. Because of this also his life first………
