Neco 2019 Geography Question 6

If \(30^{\circ}\text{C}\) is the sea‑level temperature and the environmental lapse rate is \(6.5^{\circ}\text{C}\) per 1,000 m, a survey records the region's temperature as \(27^{\circ}\text{C}\). (a) Determine the altitude of the region (in metres). The vegetation type is classified according to annual rainfall: tropical moist forest if rainfall is between 1,500 mm and 2,000 mm, savanna if rainfall is between 500 mm and 1,500 mm, and desert if rainfall is less than 250 mm. The region receives an average annual rainfall of 1,760 mm. (b) State the current vegetation type. Due to climate change the temperature rises by \(1^{\circ}\text{C}\) and rainfall decreases by 15 %. (c) What is the new vegetation classification after the change?