15. What's the requirement of every single natural process on Earth?
answer: Energy source
Answer:
D) Ciliated simple columnar epithelium
Organisms on earth live in the Biosphere
Carbonized remains are thin, approximately two-dimensional films of carbon preserved on a flat surface of rock. They are most often black in color, reflecting the fact that they composed mostly of carbon (as is coal, which is also black in color). Most fossils that exhibit “soft part” preservation are carbonizations.
I would say the answer is the Carbon remains of the original organism.
The answer is definitely B
