The Green River Formation is famous because it: is the largest fossil deposit in the world
contains the oldest known bat fossil
O has the most recently discovered fossil deposit
O is the best known location for carbonized fossils

You are given an electron micrograph of a bacterial cell. in the micrograph you can clearly see three thin layers of different densities surrounding the cell. based on the micrograph, you can infer that this cell is and would appear after application of the gram stain procedure. gram-negative / pink gram-positive / purple gram-positive / pink gram-negative / purple