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Question

The exchange of gases between the bloodstream and lungs takes place at through a process known as .

A
alveoli
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B
trachea
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C
diffusion
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D
breathing
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Solution

The correct options are
A alveoli
C diffusion
Alveoli are tiny balloon shaped structures where the exchange of gases takes place between the blood and the air in the lungs.
Carbon dioxide in the blood, moves out into the air in the alveoli while oxygen moves into the blood.
The process by which this exchange takes place is known as diffusion.

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