(a) Tourism has become the world’s single largest tertiary activity as it registered total jobs of 250 million and total revenue 40% of the total GDP. Many local people are employed to provide services—meals, accommodation, transport, serving etc. (b) Tourism fosters the growth of infrastructure industries, retail trading and craft industries. (c) In some regions, tourism is seasonal because the vacation period is dependent on favourable weather conditions but many regions are open all the year round.