South Africa is divided into nine provinces which have their own elected governments. Chapter Six of the Constitution of South Africa describes the division of power between the national government and the provincial governments, listing those "functional areas" of government that are exclusively reserved to the provincial governments and those where both levels of government have concurrent powers; the remaining areas not listed are reserved to the national government. In areas where both levels have concurrent powers there is a complex set of rules in the event of a conflict between national and provincial legislation. Generally in such a case the provincial legislation prevails, but national legislation may prescribe standards and frameworks for provinces to follow, and may prevent provinces from adversely affecting national interests or the interests of other provinces. The functional areas in which the provincial governments have powers include agriculture, arts and culture, primary and secondary education, the environment and tourism, health, housing, roads and transport, and social welfare.