is a large pediplain, formed by isolated and dispersed massifs and peaks. Because of its variations, the relief is divided into five degrees: The first degree houses areas of the state that can be flooded, which do not have a specific form of relief, but which are covered by a thin layer of water; the second degree would be the Branco River pediplain, an important unit of enormous expression in the state since it occupies a large part of its lands. In this pediplain, the altitudes vary from 70 to 160 metres and have a low slope towards the river channels. The third degree is formed by elevations that can reach an altitude of 400 metres. There are mountain ranges such as Serra da Lua, Serra Grande, Serra da Batata and others. The fourth degree is characterized by elevations that can vary from 600 to 2,000 metres of altitude, formed mainly by the Pacaraima mountain range, Serra do Parima and Serra do Urucuzeiro. These mountains are joined in the form of chains and the rivers that form the Uraricoera river are born there. Finally, the fifth degree, groups the highest regions, formed by elevations that reach almost 3,000 metres of altitude. Climate According to the Köppen-Geiger climate classification, the prevailing climate in Roraima is similar to that of other states in the North Region that shelter the Amazon rainforest: basic variations of the tropical climate. The average temperature during the year varies from 20 °C (68 °F) in points of relief with higher altitudes, to 38 °C (100.4 °F) in areas of smooth or flat relief. The rainfall index in the eastern part is about 2 thousand millimetres. In the western part, it is approximately 1.5 thousand millimetres. In the capital and nearby areas, the indexes reach 2.6 thousand millimetres. In general, the climate varies according to the region. The south and west of the state have a tropical rainforest climate (Af). The average annual temperature ranges from 25 to 28 °C (77 to 82.4 °F). In the north and east, the prevailing climates are the tropical monsoon climate (Am) and tropical savanna climate (Aw), where the average temperature is similar to the other regions of the state, however the rainfall index is lower, and the dry season is well defined. Despite the latitude, in the extreme northwest and northeast, in the highest areas of the state, it is possible