3. Explain how breathing rate is controlled. Include the role of carbon dioxide and the medulla oblongata (brain area). 4. Discuss the relationship between the alveoli and capillaries.
5. Discuss the function and importance of the ciliated epithelium lining the respiratory passages. Include the effects of smoking on this tissue.
6. Describe the workings of the larynx.
7. Describe one inherited disorder of the respiratory system.

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.

when it is at an intermediate population density