Answer:
From the political map of a continent, we learn on <u>countries</u> and <u>cities</u> within such countries, especially in <u>capitol cities</u>.
Explanation:
From the political map of a continent, we learn on <u>countries</u> and <u>cities</u> within such countries, especially in <u>capitol cities</u>. In this case, we may learn from continents:
(i) The name, location and geographical extension of every country within the continent on map.
(ii) The name and location of most important city in every country within the continent on map.
Ridge push is a process in which the unlifted ridge is thought to push the oceanic plate towards the subduction zone. Slab pull is a process where by the weight of a subducting plate help to pull the trailing lithosphere into subduction zone. Ridge lush is cause by the potential energy gradient from the high topography. Slab pull is caused by negative buoyancy of the subducting plate.
The primary case of Nigeria's water pollution would be oil spills.