(a)[3]
Name the structures marked A, B and C in Fig. 1.1.
(b)[1]
Name one non-infectious disease that affects the human gas exchange system.
(c)[1]
Malaria is an infectious disease. Name the pathogen responsible for malaria.
(d)[3]
Several vaccines are being developed to help control the spread of malaria. Explain why vaccination programmes have not been able to eradicate malaria.
(e)[4]
Fig. 1.2 shows the distribution of malaria in the Americas in 2012. Suggest the factors, apart from lack of vaccines, that could be limiting the distribution of malaria to area P.