mdvaldosta
Active Member
Before the end-Permian mass extinction 250 million years ago, the seas were home to a balance of both ecologically simple communities and complex ones. Following the extinction, complex communities displaced simple ones, coming to outnumber them three-to-one, a pattern that prevails today.It reflects the current dominance of complex, mobile organisms, such as snails and crabs, [...]
Read more at AfterTek.
Read more at AfterTek.
