Question

1)______is a biochemical process.


2)The air is filtered in______
3)The lungs are placed in______cavity.

4)______increase the surface area in the lungs,
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Answer 1

1) Respiration is a biochemical process.

2)The air is filtered in Little hairs inside your nasal cavity help filter the air you breathe .

3) The lungs are placed in chest cavity.

4)alveoli are present in the lungs with a shape that further increases surface area.

Hope it helps you...