How do mutations lead to a variation of traits with a population if organisms?

What is the process of pulling apart an n2 molecule nevermind i got it

The function of the ciliary escalator is to

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