(a)[6]
Name the structures labelled in Fig. 3.1 and outline one skin function for each. Record your answers in Table 3.1. One example is already completed for you.
(b(i))[3]
Use Fig. 3.2 to state the sweat volume for running with an empty back-pack and the sweat volume for running with a 9 kg back-pack. Use these two values to calculate the percentage increase in sweat production with the 9 kg back-pack. Give your answer to the nearest whole number. Show your working.
(b(ii))[1]
Predict the effect of repeating the same investigation if the air temperature was 15^{\circ}C.
(c)[3]
Explain how this cooling occurs.