BIOLOGY Transport in humans B6 0.0 / 5 ? ScienceThe human bodyIGCSECIE Created by: Matilde baggioCreated on: 27-03-13 04:34 52610493187 Across 1. 16% of this gas is found in the air (6) 4. what substance is carcinogenic in tobacco? (3) 5. which lung is bigger (5, 4) 6. what is sticky and clumps bacteria we breathe in ? (5) 7. where does gas exchange occur? (8) 8. small delicate hairs that line the trachea (5) Down 2. An addictive substance found in tobacco (8) 3. divides from the trachea (8) 9. a chemical reaction in which energy is released (11) 10. what does lime water test for? (6, 7)
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