Answers

2014-11-03T17:50:00+05:30
Human Geography is the banch of geography which deals how human activity affects or is influenced by the earth's surface.  
1) Concept of friction.It isnatural but discovered by man.
2)Concept of heat where fire came from.
3) A proper understanding of DNA and genetics enabled us to conquear many diseases! 
4)Understanding of laws, like aerodynamics helped in developing fast and furious planes!!
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