3.
4.
How is oxygen and carbon dioxide tran
How are the lungs designed in human
exchange of gases?
4 TRANSPORTATION
4.1 Transportation in Human Beings
Activity 6.7
Visit a health centre in your locality an
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Explanation:
gas exchange take place,in the millions of alveoll,in the lungs and the capillaries the envelope them .as shown below inhaled oxygen moves from the blood in the capillaries to the air in the alveoli.
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