Which describes a natural environment with the greatest biodiversity

Is this mrna or rna need need the answer in a hurry

What are the three different shapes or structures shapes or structure of carbon-based molecules?

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