From Danilo Jose Bonsignore@21:1/5 to All on Sat Jul 30 07:58:09 2016
Common sense tells us they started growing then dominated (extinguished competitive minor species, filled the panorama) and became the Dominant Life Form. It is much better to say though that because they were better adapted to their conditions (?) they
increased in numbers and... once they increased in numbers increased in size also.