Question

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Answer 1

Answer:

2.when diaphragm contracts we inhale air

3. when diaphragm relaxes we exhale air

4. the elasticity of chest makes the lungs to function properly

5.tgis traps the air inside the lungs and cellular respiration doesn't take properly

6. because that harmful smoke block the alveoli

Answer 2

Answer:

answer are below

Explanation:

ans

2.when diaphragm contracts the lungs gets expanded and the oxygen in the atmosphere enters in the lungs

3.when diaphragm relaxes the lungs gets back to it normal position and the carbon di oxide is released

4.muscles between ribs helps in expanding and relaxing diaphragm during the process of breathing

5. if alveoli is blocked oxidation of blood can't take place and blood will get filled with carbon di oxide

6. during smoking the intake of carbon di oxide takes place as well as poisonous tobacco gases enters our lungs and this may cause harm to our lungs