(a)[3]
Use Table 1 to identify the chief changes in world potato production between 1991 and 2007.
(b)[3]
With reference to Table 2, what might account for the different production per hectare in North America and Africa?
(c)[4]
Explain two possible reasons for different levels of potato consumption.
(d)[4]
Consider how likely the cross elasticity of demand is between fresh potatoes and processed potatoes.
(e)[6]
Discuss the impact on world trade and welfare of the spread of ‘tariff escalation’.