Fig. 2.1 is a photomicrograph of part of an egg case from a species of stick insect, Acrophylla titan. Scientists used a respirometer to investigate the effect of temperature on the rate of oxygen use by stick insects. The results of the investigation are shown in Table 2.1. (i) Using the data in Table 2.1, plot a line graph on the grid to show the effect of temperature on the rate of oxygen use. (ii) Use your graph to estimate the rate of oxygen use by stick insects at a temperature of $$\(18^{\circ} \mathrm{C}\)$$. Show on your graph how you obtained your estimate.

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