22. By which process does gas exchange occur by? 23. How does smoking impact an individual? 24. Whatdoes nicotine do? 25. What happens to your rate of breathing when; A. There is low oxygen in the air? B. Afteryou hyperventilate (high oxygen)? 26. Describe how breathing occurs in terms of volume and pres… Show more… Show more Science Biology SBI 3U Share QuestionEmailCopy link Comments (0)




