Natural vegetation refers to a plant community, which has grown naturally without human aid and has been left undisturbed by humans for a long time.
.. therefore Phytogeographically, Ethiopia comprises diverse vegetation types, including the tropical lowland rainforest in the southwest, arid and semi-arid dry woodlands in the East, and the Afroalpine forests in the north and southeast.
Some examples of Classified Groups of Vegetation in Ethiopia
Desert and Semi-desert scrublands,
Small-leaved, deciduous woodland of Acacia-Commiphora,
Moist evergreen Montane Rainforest
Lowland semi-evergreen forest
Dry evergreen montane forest and grassland complex
Afro-alpine and sub-Afro-alpine vegetation
D. Temperature
Source:Common Knowledge
The answer is D- study of maps
The appropriate answer is B. Chains of volcanoes along ocean coastlines. The theory of plate tectonics states that the earth's crust is divided into plates that float on the semi-molten mantle below. Plates can converge, diverge or slide past each other. Chains of volcanoes along coastlines are evidence of plates converging with one plate subducting beneath the other. The subducting plate will melt producing magma which is lighter than surrounding rock and so will force its way through cracks and fissures in the surface. Once magma reaches the earth's surface, volcanoes are formed.