The boundary between conducting zone and respiratory zone structures occurs at the terminal bronchiole/respiratory bronchiole junction. The major respiratory structures span the nasal cavity to the diaphragm. Functionally, the respiratory system can be divided into a conducting zone and a respiratory zone. The conducting zone of the respiratory system includes the organs and structures not directly involved in gas exchange. The gas exchange occurs in the respiratory zone.
Be found along with the diatoms and Radiolarla, in the uppermost
B. I did a project on scorpions a few years back.
Answer:
through excess us of corbon(ii)oxide emitting product such as charcoal that cause global warming hence depletion of oxygen in air
Fossils provide a window in Earth's history by showing us how life existed in <span>the past.</span>
