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1. |
Oxygen transportation in a human body takes place through 1. Blood 2. Lungs 3. Tissue The correct sequence of transportation is |
A. | 1,2,3 |
B. | 3,1,2 |
C. | 2,1,3 |
D. | 1,3,2 |
Answer» D. 1,3,2 | |