People from different age groups in one area were questioned about their tobacco-smoking habits. Fig. 2.1 is a graph showing the percentage of people who currently smoke tobacco and the percentage of people who used to smoke tobacco but have since given it up.
(a)[3]
Describe how the data for the 60+ age group differ from those for the 16-24-year-old age group.
(b)[2]
Lung cancer and other cancers can be caused by smoking tobacco. State the names of two other diseases caused by smoking tobacco.
(c)[1]
State the name of the component of tobacco smoke that causes cancer.
(d)[3]
Describe how carbon monoxide affects the gas exchange system.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A larger proportion of people in the 60+ age group have stopped smoking than in the 16-24 age group” …