This is a preview. Log in through your library . Abstract The Tennessee River is regarded as a trans-Appalachian river that formed on a coastal plain of Pennsylvanian sediments, probably early in the ...

Surprising new research shows that, contrary to conventional belief, remains of chitin-protein complex -- structural materials containing protein and polysaccharide -- are present in abundance in ...

The history of Earth’s geological structure can be divided into five eras- Azoic (Non-living era), Paleozoic, Mesozoic, Cenozoic and Neozoic era. The Azoic era is the era of the origin of the ...

Surprising new research shows that, contrary to conventional belief, remains of chitin-protein complex–structural materials containing protein and polysaccharide–are present in abundance in fossils of ...