Question

Fill in the blanks.
1. The diaphragm is lowered during ____.
2. Breathing is a ____ process.
3. Carbon dioxide turns _____ milky.
4. Exhaled air has ___% % of carbon dioxide and ____ % of oxygen.
5. Thoracic cavity is also called ____.​

Answer 1

Answer:

1. The diaphragm is lowered during inhalation

2. Breathing is a physical process.

3. Carbon dioxide turns limewater milky

4. Exhaled air has 4  % of carbon dioxide and 16 % of oxygen.

5. Thoracic cavity is also called chest cavity.​

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Answer 2

Answer:

1. breathing in
2. inhalation
3. limewater
4. 0.4%,21%
5. chest cavity