Answer:
1. The main function of the respiratory system is GAS EXCHANGE.
2. The main organs of the respiratory system is LUNGS.
3. Best answer The pathway of air in our body through the respiratory system Nostrils → Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Bronchioles → Lungs → Alveoli. By respiratory system,we usually mean the passage that transport air into the lungs and to the microscopic air sacs called alveoli and vice versa.
4. The alveoli are where the lungs and blood exchange oxygen and carbon dioxide during the process of inspiration and expiration.
5. moral depravity
6. In fact, the human body is rather tender to be threatened by various vices, such as the inadequate intake of water and excessive intake of coffee. These vices can gradually destroy our life. The first vice is to drink water inadequately, which can cause the aging of brain, induce the cardiovascular diseases and affect the metabolism of kidney.
7. ANGER, ARROGANCE, ENVY
8. AIR POLLUTION, CHEMICAL SAFETY, CLIMATE CHANGE AND NATURAL DISASTERS.
Explanation:
(^_^)
