The life of a modern man and his ancestors is quite contradictory we can see a lot of changes . the life our ancestors was very hard and there was no security of life because they lived in forests surrounded by wild animals they were always in great fear.
very slowly they began to cultivate lands and lived near the rivers . gradually the changes had taken place. the cultivation of land , living in a particular place is the symptom of civilization .with the industrial revolution in the 15th century,there dawned the scientific era in the world a number of inventions took place no doubt science has given us much of potency to battle hard with the elements of nature and diseases. it has helped us to have a control over wind and weather. we can fathom the depth of uncharted oceans and climb over lofty mountains science has helped man in thousand ways and will continue to help surely its a blessing for us this is an age of science .it has revolution-ed the life of man and will continue