Since the days of evolution of mankind on Earth , technology in some form or the other were existing in crude form . Men used to dwell in caves , go to hunting for food . Today, a Pizza is home delivered . Lots of Students ask this question like is civil engineering a good career .
For the purpose of their survival they used to reside near a stream , lake or riverside due their availability of water . Water is essential for survival of all living beings . Today water is delivered in your home through RO water purifier .
Men used to go hunting for food and developed different technologies in the shape of stone tools to hunt for food . Next , came the utensils used to cook food , serve food and eat food .
All these remains are still found in the ruins of various civilizations. Technology upgradation has always been an endeavour for mankind and they have come up with various technology during the course of their evolution.
Human welfare is associated with their good health . Drinking water has a great bearing on the health of a human being .
All the disease causing bacteria and and viruses get transmitted through water as their of disease causing germs . Hence , water available for drinking has to be safe and hygienic and disinfected .
The technology of water purifier in the form of Reverse Osmosis (RO) wtih Ultra Violet lamps to kill viruses is the answer and perfect example of how technology can be used for human welfare.
Men during pre-historic times used to walk for kilometres together , then they domesticated animals like horse which was used as their means of transportation because horse was the animal who could run for kilometres together without getting exhausted .
Now to transport goods from one place to another , a cart was invented , this cart was used to carry more than one or two persons together . A cart could carry even 10 to 20 persons together being pulled by horse or more than one horse depending on the size of the cart .
Cart was also used to transport goods in large number . Horse and cart had limitation to run for kilometres . Today , Passenger and goods train run on electricity at very high speed covering thousands of kilometres within a short time . Passengers and goods can travel even longer distances within short time , therefore technology can be used for human welfare .
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