History of man is only about 50,000 years old. In the course of human history there have been three major explosions, each corresponding to a major changes in the environment. The first population explosion occurring about 20,000 years ago. It …
1.3 Origin and Evolution of Life Origin of Universe and Earth Philosophers and scientists have been busy to solve the riddle as to how the universe and our earth were formed and how and when ‘life’ originated …
