Man throughout from the ages has been studying nature . He came to know some principle . From that he develop what is now known science . It is said that doubt is the origin of science . Science has changed our life completely . We cannot even think of our life without it . It has made its presence felt powerfully .
Man first came to know about fire . It made his life comfortable .Then he came to know the art of swimming . He made small boats . After some years he was able to build ships .
In the beginning man invented simple instrument . But with the passage of time he developed machine . at first he made millstone run by water . Now he works it with the help of electricity .
The invention of electricity has changed every sphere of our life . Science has given us so many medicines to fight with the diseases . It has provided us with radio , TV ,ac etc . so science has made our life comfortable.
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