What ecological process creates 'Derived Savanna' along the northern fringes of Nigeria's southern forest belt?
Answer and explanation
Correct answer: C. forest clearance, rotational agriculture, and repeated annual bush burning
- Step 1: Derived Savanna was originally dense tropical rainforest or deciduous forest. Step 2. Human clearance for timber, slash-and-burn farming, and recurring fires destroyed the tree canopy, allowing sun-loving savanna grasses to colonize the land. Answer: deforestation, shifting agricultural cultivation, and repeated annual bush burning. Why not the others: Marine flooding occurs on the coast; mining spills do not cause regional vegetation biome shifts; human land use is the primary driver.
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