Neco 2018 Geography Question 20

Two climatic zones lie within the same region. Zone X (lowland) - monthly mean temperatures (°C): 28, 28, 27, 26, 25, 24, 24, 24, 25, 26, 27, 28. Monthly rainfall (mm): 120, 110, 130, 150, 200, 250, 300, 280, 220, 180, 150, 130. Zone Y (highland) - monthly mean temperatures (°C): 22, 22, 21, 20, 19, 17, 17, 17, 19, 20, 21, 22. Monthly rainfall (mm): 80, 70, 90, 110, 150, 200, 250, 240, 180, 130, 100, 90. For each zone: 1. Compute the annual mean temperature and total annual rainfall. 2. Classify the climate using the Köppen system (choose among Af, Am, Aw, Cfa, Cfb, Cwa, Dfb, etc.). Cocoa cultivation requires a mean temperature between 21 °C and 27 °C and annual rainfall exceeding 1,500 mm. Indicate which zone is more suitable for cocoa production.