Factors control the cooling time of magma within the crust include surface water passing over the magma and the depth at which the magma cool.
Surface water passing over the magma absorbs the water and carries away heat and magma present in depths is cooler than surface because magma rises to earth surface due to high pressure and that is hot.
Savanna grassland conguers most regions in Sub-saharan africa. The grassland Biome is found in the central part of the country, inland areas, and Kwazulu natal and its topography is mainly lowland and flat.
