Singapore derives most of its revenues from foreign trade. The biggest export product, with 43 percent share, is machinery and equipment. The country also exports petroleum (19 percent); chemical products (13 percent); miscellaneous manufactured articles (8 percent) and oil bunkers (7 percent). Singapore's main exporter partners are China (15 percent of total exports), Hong Kong (12 percent), Malaysia (11 percent), Indonesia (8 percent), United States (6 percent) and Japan (5 percent).

(a) Explain with example Singapore's main resource scarcity in ensuring they have their own primary production for agriculture based products.