JAMB - Biology (2003 - No. 32)
The correct sequence of biomes from northern to southern Nigeria is
Guinea savanna → sudan savanna → tropical rain forest → sahel savanna → estuarine
Estuarine → tropical rain forest → guinea savanna → sahel savanna
Sahel savanna → tropical rain forest → estuarine → guinea savanna
Sahel savanna → sudan savanna → guinea savanna → tropical rain forest → estuarine