I m being confused of it...
that, it is said that firstly the early humans were tall and big in size, they live long life.. but recent humanity is smaller and no longer can live approximatelly before 100 years old dies..
so my Question's concept is just what was the reason of that period they were completely change from us..?????
and also please clear it that... I have heared that the Atoms and Cells of that period were bigger than recent, therefore they were as large. IS it correct concept????
By: A student of Science from Pakistan