1. Explain what the process of respiration is. 2. List at least 6 of the organs or structures which exist in the
respiratory system.
3. When we exercise, why do we breathe harder?

1. The process of respiration is inhaling oxygen and exhaling carbon dioxide.

2. Lungs, Bronchus, Trachea, Larynx, Pharynx, Bronchiole, and Pulmonary Alveolus

3. Our bodies use more oxygen which produces more carbon dioxide. To fulfill the body's needs, your breathing has to increase from about 15 times a minute to about 40–60 times a minute.

Ch4 is nonpolar and insoluble in water. since all of the hydrogen atoms are evenly spread around the carbon atom even through the c h bond is polar all the poles cancel each other out.