Which part of the respiratory system is task to clean the air and channels it into the lungs through two large tubes called bronchi.

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Describe the two types of vascular tissue

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