(a(i))[3]
Identify the structures marked A, B and C in Fig. 1.1.
(a(ii))[4]
Explain how the structures in the gas exchange system bring about inspiration.
(b(i))[2]
Calculate the percentage of women in group 2 who died from lung cancer. Give your answer to two significant figures in Table 1.1.
(b(ii))[3]
Discuss the evidence from Table 1.1 that backs up these laws.
(b(iii))[2]
Smoking has been shown to increase the chance of developing diseases other than cancer. State two other diseases that can be caused by smoking.