Science and technology havea great influence inon human life since their inception.
and asserts the need of reducing the precarious outcome of it for the rise of a risk free society in future.
... this latter part needs to be re-phrased; you flow somewhat disturbed by that.
Technology is considered to be the one,is developed to reduce the effort of people.
.... this has grammar issues;
This is what I suggest;
Technology offers
convenient and
efficient solutions for the people. .... "convenient" and "efficient" are good keywords when you discuss on technology themes.
.For instance,the inventions of weapons especially nuclear war gadgets are extremely dangerous for the existence of the entire life forms on earth.
For example, the development of more technologically advanced modern weaponry can be very dangerous for the existence of mankind.