A hard, shiny and carbon-rich organic rock that burns smo...
A hard, shiny and carbon-rich organic rock that burns smokelessly is?
peat
rhyolite
marbel
anthracite
Correct answer is D
No explanation has been provided for this answer.
The points marked (1) and (2) on the map are both sites of ...
The gradient along the main river between the points marked X and Y is approximately ...
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The prominent feature running approximately N.W to S.E is best described as ...
On which of the following sea is coffee an important commodity? ...
Economic activities in tropical Africa largely depend on? ...