<Li> The South temperate zone, between the Tropic of Capricorn 23.5 ° S and the Antarctic Circle 66.5 ° S. Covers 25.99% of Earth's surface . </Li> <Li> The South frigid zone, from Antarctic Circle 66.5 ° S and the South Pole 90 ° S. Covers 4.12% of Earth's surface . </Li> <P> On the basis of latitudinal extent, the globe is divided into three broad heat zones . </P> <P> The Torrid is also known as the Tropics . The zone is bounded on the north by the Tropic of Cancer and on the south by the Tropic of Capricorn; these latitudes mark the northern and southern extremes in which the sun seasonally passes directly overhead . This happens annually, but in the region between, the sun passes overhead twice a year . </P>

How many heat zones are there on the earth